1 /* PPTP constants and structs */
2 #ifndef _CONNTRACK_PPTP_H
3 #define _CONNTRACK_PPTP_H
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 */
14 /* state of the call inside the control session */
15 enum pptp_ctrlcall_state {
27 /* conntrack private data */
28 struct ip_ct_pptp_master {
29 enum pptp_ctrlsess_state sstate; /* session state */
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 __be16 pac_call_id; /* call id of PAC, host byte order */
35 __be16 pns_call_id; /* call id of PNS, host byte order */
37 /* in pre-2.6.11 this used to be per-expect. Now it is per-conntrack
38 * and therefore imposes a fixed limit on the number of maps */
39 struct ip_ct_gre_keymap *keymap_orig, *keymap_reply;
42 /* conntrack_expect private member */
43 struct ip_ct_pptp_expect {
44 enum pptp_ctrlcall_state cstate; /* call state */
45 __be16 pac_call_id; /* call id of PAC */
46 __be16 pns_call_id; /* call id of PNS */
52 #define IP_CONNTR_PPTP PPTP_CONTROL_PORT
54 #define PPTP_CONTROL_PORT 1723
56 #define PPTP_PACKET_CONTROL 1
57 #define PPTP_PACKET_MGMT 2
59 #define PPTP_MAGIC_COOKIE 0x1a2b3c4d
67 /* PptpControlMessageType values */
68 #define PPTP_START_SESSION_REQUEST 1
69 #define PPTP_START_SESSION_REPLY 2
70 #define PPTP_STOP_SESSION_REQUEST 3
71 #define PPTP_STOP_SESSION_REPLY 4
72 #define PPTP_ECHO_REQUEST 5
73 #define PPTP_ECHO_REPLY 6
74 #define PPTP_OUT_CALL_REQUEST 7
75 #define PPTP_OUT_CALL_REPLY 8
76 #define PPTP_IN_CALL_REQUEST 9
77 #define PPTP_IN_CALL_REPLY 10
78 #define PPTP_IN_CALL_CONNECT 11
79 #define PPTP_CALL_CLEAR_REQUEST 12
80 #define PPTP_CALL_DISCONNECT_NOTIFY 13
81 #define PPTP_WAN_ERROR_NOTIFY 14
82 #define PPTP_SET_LINK_INFO 15
84 #define PPTP_MSG_MAX 15
86 /* PptpGeneralError values */
87 #define PPTP_ERROR_CODE_NONE 0
88 #define PPTP_NOT_CONNECTED 1
89 #define PPTP_BAD_FORMAT 2
90 #define PPTP_BAD_VALUE 3
91 #define PPTP_NO_RESOURCE 4
92 #define PPTP_BAD_CALLID 5
93 #define PPTP_REMOVE_DEVICE_ERROR 6
95 struct PptpControlHeader {
100 /* FramingCapability Bitmap Values */
101 #define PPTP_FRAME_CAP_ASYNC 0x1
102 #define PPTP_FRAME_CAP_SYNC 0x2
104 /* BearerCapability Bitmap Values */
105 #define PPTP_BEARER_CAP_ANALOG 0x1
106 #define PPTP_BEARER_CAP_DIGITAL 0x2
108 struct PptpStartSessionRequest {
109 __be16 protocolVersion;
111 __be32 framingCapability;
112 __be32 bearerCapability;
114 __be16 firmwareRevision;
116 __u8 vendorString[64];
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
126 struct PptpStartSessionReply {
127 __be16 protocolVersion;
129 __u8 generalErrorCode;
130 __be32 framingCapability;
131 __be32 bearerCapability;
133 __be16 firmwareRevision;
135 __u8 vendorString[64];
138 /* PptpStopReasons */
139 #define PPTP_STOP_NONE 1
140 #define PPTP_STOP_PROTOCOL 2
141 #define PPTP_STOP_LOCAL_SHUTDOWN 3
143 struct PptpStopSessionRequest {
149 /* PptpStopSessionResultCode */
150 #define PPTP_STOP_OK 1
151 #define PPTP_STOP_GENERAL_ERROR 2
153 struct PptpStopSessionReply {
155 __u8 generalErrorCode;
159 struct PptpEchoRequest {
163 /* PptpEchoReplyResultCode */
164 #define PPTP_ECHO_OK 1
165 #define PPTP_ECHO_GENERAL_ERROR 2
167 struct PptpEchoReply {
170 __u8 generalErrorCode;
174 /* PptpFramingType */
175 #define PPTP_ASYNC_FRAMING 1
176 #define PPTP_SYNC_FRAMING 2
177 #define PPTP_DONT_CARE_FRAMING 3
179 /* PptpCallBearerType */
180 #define PPTP_ANALOG_TYPE 1
181 #define PPTP_DIGITAL_TYPE 2
182 #define PPTP_DONT_CARE_BEARER_TYPE 3
184 struct PptpOutCallRequest {
186 __be16 callSerialNumber;
192 __be16 packetProcDelay;
193 __be16 phoneNumberLength;
195 __u8 phoneNumber[64];
199 /* PptpCallResultCode */
200 #define PPTP_OUTCALL_CONNECT 1
201 #define PPTP_OUTCALL_GENERAL_ERROR 2
202 #define PPTP_OUTCALL_NO_CARRIER 3
203 #define PPTP_OUTCALL_BUSY 4
204 #define PPTP_OUTCALL_NO_DIAL_TONE 5
205 #define PPTP_OUTCALL_TIMEOUT 6
206 #define PPTP_OUTCALL_DONT_ACCEPT 7
208 struct PptpOutCallReply {
212 __u8 generalErrorCode;
216 __be16 packetProcDelay;
217 __be32 physChannelID;
220 struct PptpInCallRequest {
222 __be16 callSerialNumber;
223 __be32 callBearerType;
224 __be32 physChannelID;
225 __be16 dialedNumberLength;
226 __be16 dialingNumberLength;
227 __u8 dialedNumber[64];
228 __u8 dialingNumber[64];
232 /* PptpInCallResultCode */
233 #define PPTP_INCALL_ACCEPT 1
234 #define PPTP_INCALL_GENERAL_ERROR 2
235 #define PPTP_INCALL_DONT_ACCEPT 3
237 struct PptpInCallReply {
241 __u8 generalErrorCode;
243 __be16 packetProcDelay;
247 struct PptpInCallConnected {
252 __be16 packetProcDelay;
253 __be32 callFramingType;
256 struct PptpClearCallRequest {
261 struct PptpCallDisconnectNotify {
264 __u8 generalErrorCode;
267 __u8 callStatistics[128];
270 struct PptpWanErrorNotify {
274 __be32 framingErrors;
275 __be32 hardwareOverRuns;
276 __be32 bufferOverRuns;
277 __be32 timeoutErrors;
278 __be32 alignmentErrors;
281 struct PptpSetLinkInfo {
288 union pptp_ctrl_union {
289 struct PptpStartSessionRequest sreq;
290 struct PptpStartSessionReply srep;
291 struct PptpStopSessionRequest streq;
292 struct PptpStopSessionReply strep;
293 struct PptpOutCallRequest ocreq;
294 struct PptpOutCallReply ocack;
295 struct PptpInCallRequest icreq;
296 struct PptpInCallReply icack;
297 struct PptpInCallConnected iccon;
298 struct PptpClearCallRequest clrreq;
299 struct PptpCallDisconnectNotify disc;
300 struct PptpWanErrorNotify wanerr;
301 struct PptpSetLinkInfo setlink;
305 (*ip_nat_pptp_hook_outbound)(struct sk_buff **pskb,
306 struct ip_conntrack *ct,
307 enum ip_conntrack_info ctinfo,
308 struct PptpControlHeader *ctlh,
309 union pptp_ctrl_union *pptpReq);
312 (*ip_nat_pptp_hook_inbound)(struct sk_buff **pskb,
313 struct ip_conntrack *ct,
314 enum ip_conntrack_info ctinfo,
315 struct PptpControlHeader *ctlh,
316 union pptp_ctrl_union *pptpReq);
319 (*ip_nat_pptp_hook_exp_gre)(struct ip_conntrack_expect *exp_orig,
320 struct ip_conntrack_expect *exp_reply);
323 (*ip_nat_pptp_hook_expectfn)(struct ip_conntrack *ct,
324 struct ip_conntrack_expect *exp);
325 #endif /* __KERNEL__ */
326 #endif /* _CONNTRACK_PPTP_H */