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      0x00
 133 #define L2CAP_CONF_UNACCEPT     0x01
 134
 135 struct l2cap_conf_opt {
 136         __u8       type;
 137         __u8       len;
 138         __u8       val[0];
 139 } __attribute__ ((packed));
 140 #define L2CAP_CONF_OPT_SIZE     2
 141
 142 #define L2CAP_CONF_MTU          0x01
 143 #define L2CAP_CONF_FLUSH_TO     0x02
 144 #define L2CAP_CONF_QOS          0x03
 145 #define L2CAP_CONF_RFC          0x04
 146
 147 #define L2CAP_CONF_MAX_SIZE     22
 148
 149 struct l2cap_disconn_req {
 150         __u16      dcid;
 151         __u16      scid;
 152 } __attribute__ ((packed));
 153
 154 struct l2cap_disconn_rsp {
 155         __u16      dcid;
 156         __u16      scid;
 157 } __attribute__ ((packed));
 158
 159 struct l2cap_info_req {
 160         __u16       type;
 161         __u8        data[0];
 162 } __attribute__ ((packed));
 163
 164 struct l2cap_info_rsp {
 165         __u16       type;
 166         __u16       result;
 167         __u8        data[0];
 168 } __attribute__ ((packed));
 169
 170 /* info type */
 171 #define L2CAP_IT_CL_MTU     0x0001
 172 #define L2CAP_IT_FEAT_MASK  0x0002
 173
 174 /* info result */
 175 #define L2CAP_IR_SUCCESS    0x0000
 176 #define L2CAP_IR_NOTSUPP    0x0001
 177
 178 /* ----- L2CAP connections ----- */
 179 struct l2cap_chan_list {
 180         struct sock     *head;
 181         rwlock_t        lock;
 182         long            num;
 183 };
 184
 185 struct l2cap_conn {
 186         struct hci_conn *hcon;
 187
 188         bdaddr_t        *dst;
 189         bdaddr_t        *src;
 190
 191         unsigned int    mtu;
 192
 193         spinlock_t      lock;
 194
 195         struct sk_buff *rx_skb;
 196         __u32           rx_len;
 197         __u8            rx_ident;
 198         __u8            tx_ident;
 199
 200         struct l2cap_chan_list chan_list;
 201 };
 202
 203 /* ----- L2CAP channel and socket info ----- */
 204 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
 205
 206 struct l2cap_pinfo {
 207         struct bt_sock  bt;
 208         __u16           psm;
 209         __u16           dcid;
 210         __u16           scid;
 211
 212         __u16           imtu;
 213         __u16           omtu;
 214         __u16           flush_to;
 215
 216         __u32           link_mode;
 217
 218         __u8            conf_state;
 219         __u8            conf_retry;
 220         __u16           conf_mtu;
 221
 222         __u8            ident;
 223
 224         __u16           sport;
 225
 226         struct l2cap_conn       *conn;
 227         struct sock             *next_c;
 228         struct sock             *prev_c;
 229 };
 230
 231 #define L2CAP_CONF_REQ_SENT    0x01
 232 #define L2CAP_CONF_INPUT_DONE  0x02
 233 #define L2CAP_CONF_OUTPUT_DONE 0x04
 234 #define L2CAP_CONF_MAX_RETRIES 2
 235
 236 void l2cap_load(void);
 237
 238 #endif /* __L2CAP_H */