include/linux/netfilter_ipv4/ip_conntrack_pptp.h

   1 /* PPTP constants and structs */
   2 #ifndef _CONNTRACK_PPTP_H
   3 #define _CONNTRACK_PPTP_H
   4
   5 /* state of the control session */
   6 enum pptp_ctrlsess_state {
   7         PPTP_SESSION_NONE,                      /* no session present */
   8         PPTP_SESSION_ERROR,                     /* some session error */
   9         PPTP_SESSION_STOPREQ,                   /* stop_sess request seen */
  10         PPTP_SESSION_REQUESTED,                 /* start_sess request seen */
  11         PPTP_SESSION_CONFIRMED,                 /* session established */
  12 };
  13
  14 /* state of the call inside the control session */
  15 enum pptp_ctrlcall_state {
  16         PPTP_CALL_NONE,
  17         PPTP_CALL_ERROR,
  18         PPTP_CALL_OUT_REQ,
  19         PPTP_CALL_OUT_CONF,
  20         PPTP_CALL_IN_REQ,
  21         PPTP_CALL_IN_REP,
  22         PPTP_CALL_IN_CONF,
  23         PPTP_CALL_CLEAR_REQ,
  24 };
  25
  26
  27 /* conntrack private data */
  28 struct ip_ct_pptp_master {
  29         enum pptp_ctrlsess_state sstate;        /* session state */
  30
  31         /* everything below is going to be per-expectation in newnat,
  32          * since there could be more than one call within one session */
  33         enum pptp_ctrlcall_state cstate;        /* call state */
  34         u_int16_t pac_call_id;                  /* call id of PAC, host byte order */
  35         u_int16_t pns_call_id;                  /* call id of PNS, host byte order */
  36 };
  37
  38 /* conntrack_expect private member */
  39 struct ip_ct_pptp_expect {
  40         enum pptp_ctrlcall_state cstate;        /* call state */
  41         u_int16_t pac_call_id;                  /* call id of PAC */
  42         u_int16_t pns_call_id;                  /* call id of PNS */
  43 };
  44
  45
  46 #ifdef __KERNEL__
  47
  48 #include <linux/netfilter_ipv4/lockhelp.h>
  49 DECLARE_LOCK_EXTERN(ip_pptp_lock);
  50
  51 #define IP_CONNTR_PPTP          PPTP_CONTROL_PORT
  52
  53 #define PPTP_CONTROL_PORT       1723
  54
  55 #define PPTP_PACKET_CONTROL     1
  56 #define PPTP_PACKET_MGMT        2
  57
  58 #define PPTP_MAGIC_COOKIE       0x1a2b3c4d
  59
  60 struct pptp_pkt_hdr {
  61         __u16   packetLength;
  62         __u16   packetType;
  63         __u32   magicCookie;
  64 };
  65
  66 /* PptpControlMessageType values */
  67 #define PPTP_START_SESSION_REQUEST      1
  68 #define PPTP_START_SESSION_REPLY        2
  69 #define PPTP_STOP_SESSION_REQUEST       3
  70 #define PPTP_STOP_SESSION_REPLY         4
  71 #define PPTP_ECHO_REQUEST               5
  72 #define PPTP_ECHO_REPLY                 6
  73 #define PPTP_OUT_CALL_REQUEST           7
  74 #define PPTP_OUT_CALL_REPLY             8
  75 #define PPTP_IN_CALL_REQUEST            9
  76 #define PPTP_IN_CALL_REPLY              10
  77 #define PPTP_IN_CALL_CONNECT            11
  78 #define PPTP_CALL_CLEAR_REQUEST         12
  79 #define PPTP_CALL_DISCONNECT_NOTIFY     13
  80 #define PPTP_WAN_ERROR_NOTIFY           14
  81 #define PPTP_SET_LINK_INFO              15
  82
  83 #define PPTP_MSG_MAX                    15
  84
  85 /* PptpGeneralError values */
  86 #define PPTP_ERROR_CODE_NONE            0
  87 #define PPTP_NOT_CONNECTED              1
  88 #define PPTP_BAD_FORMAT                 2
  89 #define PPTP_BAD_VALUE                  3
  90 #define PPTP_NO_RESOURCE                4
  91 #define PPTP_BAD_CALLID                 5
  92 #define PPTP_REMOVE_DEVICE_ERROR        6
  93
  94 struct PptpControlHeader {
  95         __u16   messageType;
  96         __u16   reserved;
  97 };
  98
  99 /* FramingCapability Bitmap Values */
 100 #define PPTP_FRAME_CAP_ASYNC            0x1
 101 #define PPTP_FRAME_CAP_SYNC             0x2
 102
 103 /* BearerCapability Bitmap Values */
 104 #define PPTP_BEARER_CAP_ANALOG          0x1
 105 #define PPTP_BEARER_CAP_DIGITAL         0x2
 106
 107 struct PptpStartSessionRequest {
 108         __u16   protocolVersion;
 109         __u8    reserved1;
 110         __u8    reserved2;
 111         __u32   framingCapability;
 112         __u32   bearerCapability;
 113         __u16   maxChannels;
 114         __u16   firmwareRevision;
 115         __u8    hostName[64];
 116         __u8    vendorString[64];
 117 };
 118
 119 /* PptpStartSessionResultCode Values */
 120 #define PPTP_START_OK                   1
 121 #define PPTP_START_GENERAL_ERROR        2
 122 #define PPTP_START_ALREADY_CONNECTED    3
 123 #define PPTP_START_NOT_AUTHORIZED       4
 124 #define PPTP_START_UNKNOWN_PROTOCOL     5
 125
 126 struct PptpStartSessionReply {
 127         __u16   protocolVersion;
 128         __u8    resultCode;
 129         __u8    generalErrorCode;
 130         __u32   framingCapability;
 131         __u32   bearerCapability;
 132         __u16   maxChannels;
 133         __u16   firmwareRevision;
 134         __u8    hostName[64];
 135         __u8    vendorString[64];
 136 };
 137
 138 /* PptpStopReasons */
 139 #define PPTP_STOP_NONE                  1
 140 #define PPTP_STOP_PROTOCOL              2
 141 #define PPTP_STOP_LOCAL_SHUTDOWN        3
 142
 143 struct PptpStopSessionRequest {
 144         __u8    reason;
 145 };
 146
 147 /* PptpStopSessionResultCode */
 148 #define PPTP_STOP_OK                    1
 149 #define PPTP_STOP_GENERAL_ERROR         2
 150
 151 struct PptpStopSessionReply {
 152         __u8    resultCode;
 153         __u8    generalErrorCode;
 154 };
 155
 156 struct PptpEchoRequest {
 157         __u32 identNumber;
 158 };
 159
 160 /* PptpEchoReplyResultCode */
 161 #define PPTP_ECHO_OK                    1
 162 #define PPTP_ECHO_GENERAL_ERROR         2
 163
 164 struct PptpEchoReply {
 165         __u32   identNumber;
 166         __u8    resultCode;
 167         __u8    generalErrorCode;
 168         __u16   reserved;
 169 };
 170
 171 /* PptpFramingType */
 172 #define PPTP_ASYNC_FRAMING              1
 173 #define PPTP_SYNC_FRAMING               2
 174 #define PPTP_DONT_CARE_FRAMING          3
 175
 176 /* PptpCallBearerType */
 177 #define PPTP_ANALOG_TYPE                1
 178 #define PPTP_DIGITAL_TYPE               2
 179 #define PPTP_DONT_CARE_BEARER_TYPE      3
 180
 181 struct PptpOutCallRequest {
 182         __u16   callID;
 183         __u16   callSerialNumber;
 184         __u32   minBPS;
 185         __u32   maxBPS;
 186         __u32   bearerType;
 187         __u32   framingType;
 188         __u16   packetWindow;
 189         __u16   packetProcDelay;
 190         __u16   reserved1;
 191         __u16   phoneNumberLength;
 192         __u16   reserved2;
 193         __u8    phoneNumber[64];
 194         __u8    subAddress[64];
 195 };
 196
 197 /* PptpCallResultCode */
 198 #define PPTP_OUTCALL_CONNECT            1
 199 #define PPTP_OUTCALL_GENERAL_ERROR      2
 200 #define PPTP_OUTCALL_NO_CARRIER         3
 201 #define PPTP_OUTCALL_BUSY               4
 202 #define PPTP_OUTCALL_NO_DIAL_TONE       5
 203 #define PPTP_OUTCALL_TIMEOUT            6
 204 #define PPTP_OUTCALL_DONT_ACCEPT        7
 205
 206 struct PptpOutCallReply {
 207         __u16   callID;
 208         __u16   peersCallID;
 209         __u8    resultCode;
 210         __u8    generalErrorCode;
 211         __u16   causeCode;
 212         __u32   connectSpeed;
 213         __u16   packetWindow;
 214         __u16   packetProcDelay;
 215         __u32   physChannelID;
 216 };
 217
 218 struct PptpInCallRequest {
 219         __u16   callID;
 220         __u16   callSerialNumber;
 221         __u32   callBearerType;
 222         __u32   physChannelID;
 223         __u16   dialedNumberLength;
 224         __u16   dialingNumberLength;
 225         __u8    dialedNumber[64];
 226         __u8    dialingNumber[64];
 227         __u8    subAddress[64];
 228 };
 229
 230 /* PptpInCallResultCode */
 231 #define PPTP_INCALL_ACCEPT              1
 232 #define PPTP_INCALL_GENERAL_ERROR       2
 233 #define PPTP_INCALL_DONT_ACCEPT         3
 234
 235 struct PptpInCallReply {
 236         __u16   callID;
 237         __u16   peersCallID;
 238         __u8    resultCode;
 239         __u8    generalErrorCode;
 240         __u16   packetWindow;
 241         __u16   packetProcDelay;
 242         __u16   reserved;
 243 };
 244
 245 struct PptpInCallConnected {
 246         __u16   peersCallID;
 247         __u16   reserved;
 248         __u32   connectSpeed;
 249         __u16   packetWindow;
 250         __u16   packetProcDelay;
 251         __u32   callFramingType;
 252 };
 253
 254 struct PptpClearCallRequest {
 255         __u16   callID;
 256         __u16   reserved;
 257 };
 258
 259 struct PptpCallDisconnectNotify {
 260         __u16   callID;
 261         __u8    resultCode;
 262         __u8    generalErrorCode;
 263         __u16   causeCode;
 264         __u16   reserved;
 265         __u8    callStatistics[128];
 266 };
 267
 268 struct PptpWanErrorNotify {
 269         __u16   peersCallID;
 270         __u16   reserved;
 271         __u32   crcErrors;
 272         __u32   framingErrors;
 273         __u32   hardwareOverRuns;
 274         __u32   bufferOverRuns;
 275         __u32   timeoutErrors;
 276         __u32   alignmentErrors;
 277 };
 278
 279 struct PptpSetLinkInfo {
 280         __u16   peersCallID;
 281         __u16   reserved;
 282         __u32   sendAccm;
 283         __u32   recvAccm;
 284 };
 285
 286
 287 struct pptp_priv_data {
 288         __u16   call_id;
 289         __u16   mcall_id;
 290         __u16   pcall_id;
 291 };
 292
 293 union pptp_ctrl_union {
 294                 struct PptpStartSessionRequest  sreq;
 295                 struct PptpStartSessionReply    srep;
 296                 struct PptpStopSessionRequest   streq;
 297                 struct PptpStopSessionReply     strep;
 298                 struct PptpOutCallRequest       ocreq;
 299                 struct PptpOutCallReply         ocack;
 300                 struct PptpInCallRequest        icreq;
 301                 struct PptpInCallReply          icack;
 302                 struct PptpInCallConnected      iccon;
 303                 struct PptpClearCallRequest     clrreq;
 304                 struct PptpCallDisconnectNotify disc;
 305                 struct PptpWanErrorNotify       wanerr;
 306                 struct PptpSetLinkInfo          setlink;
 307 };
 308
 309 #endif /* __KERNEL__ */
 310 #endif /* _CONNTRACK_PPTP_H */