--- /dev/null
+/* PPTP constants and structs */
+#ifndef _NF_CONNTRACK_PPTP_H
+#define _NF_CONNTRACK_PPTP_H
+
+#include <linux/netfilter/nf_conntrack_common.h>
+
+/* state of the control session */
+enum pptp_ctrlsess_state {
+ PPTP_SESSION_NONE, /* no session present */
+ PPTP_SESSION_ERROR, /* some session error */
+ PPTP_SESSION_STOPREQ, /* stop_sess request seen */
+ PPTP_SESSION_REQUESTED, /* start_sess request seen */
+ PPTP_SESSION_CONFIRMED, /* session established */
+};
+
+/* state of the call inside the control session */
+enum pptp_ctrlcall_state {
+ PPTP_CALL_NONE,
+ PPTP_CALL_ERROR,
+ PPTP_CALL_OUT_REQ,
+ PPTP_CALL_OUT_CONF,
+ PPTP_CALL_IN_REQ,
+ PPTP_CALL_IN_REP,
+ PPTP_CALL_IN_CONF,
+ PPTP_CALL_CLEAR_REQ,
+};
+
+/* conntrack private data */
+struct nf_ct_pptp_master {
+ enum pptp_ctrlsess_state sstate; /* session state */
+ enum pptp_ctrlcall_state cstate; /* call state */
+ __be16 pac_call_id; /* call id of PAC */
+ __be16 pns_call_id; /* call id of PNS */
+
+ /* in pre-2.6.11 this used to be per-expect. Now it is per-conntrack
+ * and therefore imposes a fixed limit on the number of maps */
+ struct nf_ct_gre_keymap *keymap[IP_CT_DIR_MAX];
+};
+
+struct nf_nat_pptp {
+ __be16 pns_call_id; /* NAT'ed PNS call id */
+ __be16 pac_call_id; /* NAT'ed PAC call id */
+};
+
+#ifdef __KERNEL__
+
+#define PPTP_CONTROL_PORT 1723
+
+#define PPTP_PACKET_CONTROL 1
+#define PPTP_PACKET_MGMT 2
+
+#define PPTP_MAGIC_COOKIE 0x1a2b3c4d
+
+struct pptp_pkt_hdr {
+ __u16 packetLength;
+ __be16 packetType;
+ __be32 magicCookie;
+};
+
+/* PptpControlMessageType values */
+#define PPTP_START_SESSION_REQUEST 1
+#define PPTP_START_SESSION_REPLY 2
+#define PPTP_STOP_SESSION_REQUEST 3
+#define PPTP_STOP_SESSION_REPLY 4
+#define PPTP_ECHO_REQUEST 5
+#define PPTP_ECHO_REPLY 6
+#define PPTP_OUT_CALL_REQUEST 7
+#define PPTP_OUT_CALL_REPLY 8
+#define PPTP_IN_CALL_REQUEST 9
+#define PPTP_IN_CALL_REPLY 10
+#define PPTP_IN_CALL_CONNECT 11
+#define PPTP_CALL_CLEAR_REQUEST 12
+#define PPTP_CALL_DISCONNECT_NOTIFY 13
+#define PPTP_WAN_ERROR_NOTIFY 14
+#define PPTP_SET_LINK_INFO 15
+
+#define PPTP_MSG_MAX 15
+
+/* PptpGeneralError values */
+#define PPTP_ERROR_CODE_NONE 0
+#define PPTP_NOT_CONNECTED 1
+#define PPTP_BAD_FORMAT 2
+#define PPTP_BAD_VALUE 3
+#define PPTP_NO_RESOURCE 4
+#define PPTP_BAD_CALLID 5
+#define PPTP_REMOVE_DEVICE_ERROR 6
+
+struct PptpControlHeader {
+ __be16 messageType;
+ __u16 reserved;
+};
+
+/* FramingCapability Bitmap Values */
+#define PPTP_FRAME_CAP_ASYNC 0x1
+#define PPTP_FRAME_CAP_SYNC 0x2
+
+/* BearerCapability Bitmap Values */
+#define PPTP_BEARER_CAP_ANALOG 0x1
+#define PPTP_BEARER_CAP_DIGITAL 0x2
+
+struct PptpStartSessionRequest {
+ __be16 protocolVersion;
+ __u16 reserved1;
+ __be32 framingCapability;
+ __be32 bearerCapability;
+ __be16 maxChannels;
+ __be16 firmwareRevision;
+ __u8 hostName[64];
+ __u8 vendorString[64];
+};
+
+/* PptpStartSessionResultCode Values */
+#define PPTP_START_OK 1
+#define PPTP_START_GENERAL_ERROR 2
+#define PPTP_START_ALREADY_CONNECTED 3
+#define PPTP_START_NOT_AUTHORIZED 4
+#define PPTP_START_UNKNOWN_PROTOCOL 5
+
+struct PptpStartSessionReply {
+ __be16 protocolVersion;
+ __u8 resultCode;
+ __u8 generalErrorCode;
+ __be32 framingCapability;
+ __be32 bearerCapability;
+ __be16 maxChannels;
+ __be16 firmwareRevision;
+ __u8 hostName[64];
+ __u8 vendorString[64];
+};
+
+/* PptpStopReasons */
+#define PPTP_STOP_NONE 1
+#define PPTP_STOP_PROTOCOL 2
+#define PPTP_STOP_LOCAL_SHUTDOWN 3
+
+struct PptpStopSessionRequest {
+ __u8 reason;
+ __u8 reserved1;
+ __u16 reserved2;
+};
+
+/* PptpStopSessionResultCode */
+#define PPTP_STOP_OK 1
+#define PPTP_STOP_GENERAL_ERROR 2
+
+struct PptpStopSessionReply {
+ __u8 resultCode;
+ __u8 generalErrorCode;
+ __u16 reserved1;
+};
+
+struct PptpEchoRequest {
+ __be32 identNumber;
+};
+
+/* PptpEchoReplyResultCode */
+#define PPTP_ECHO_OK 1
+#define PPTP_ECHO_GENERAL_ERROR 2
+
+struct PptpEchoReply {
+ __be32 identNumber;
+ __u8 resultCode;
+ __u8 generalErrorCode;
+ __u16 reserved;
+};
+
+/* PptpFramingType */
+#define PPTP_ASYNC_FRAMING 1
+#define PPTP_SYNC_FRAMING 2
+#define PPTP_DONT_CARE_FRAMING 3
+
+/* PptpCallBearerType */
+#define PPTP_ANALOG_TYPE 1
+#define PPTP_DIGITAL_TYPE 2
+#define PPTP_DONT_CARE_BEARER_TYPE 3
+
+struct PptpOutCallRequest {
+ __be16 callID;
+ __be16 callSerialNumber;
+ __be32 minBPS;
+ __be32 maxBPS;
+ __be32 bearerType;
+ __be32 framingType;
+ __be16 packetWindow;
+ __be16 packetProcDelay;
+ __be16 phoneNumberLength;
+ __u16 reserved1;
+ __u8 phoneNumber[64];
+ __u8 subAddress[64];
+};
+
+/* PptpCallResultCode */
+#define PPTP_OUTCALL_CONNECT 1
+#define PPTP_OUTCALL_GENERAL_ERROR 2
+#define PPTP_OUTCALL_NO_CARRIER 3
+#define PPTP_OUTCALL_BUSY 4
+#define PPTP_OUTCALL_NO_DIAL_TONE 5
+#define PPTP_OUTCALL_TIMEOUT 6
+#define PPTP_OUTCALL_DONT_ACCEPT 7
+
+struct PptpOutCallReply {
+ __be16 callID;
+ __be16 peersCallID;
+ __u8 resultCode;
+ __u8 generalErrorCode;
+ __be16 causeCode;
+ __be32 connectSpeed;
+ __be16 packetWindow;
+ __be16 packetProcDelay;
+ __be32 physChannelID;
+};
+
+struct PptpInCallRequest {
+ __be16 callID;
+ __be16 callSerialNumber;
+ __be32 callBearerType;
+ __be32 physChannelID;
+ __be16 dialedNumberLength;
+ __be16 dialingNumberLength;
+ __u8 dialedNumber[64];
+ __u8 dialingNumber[64];
+ __u8 subAddress[64];
+};
+
+/* PptpInCallResultCode */
+#define PPTP_INCALL_ACCEPT 1
+#define PPTP_INCALL_GENERAL_ERROR 2
+#define PPTP_INCALL_DONT_ACCEPT 3
+
+struct PptpInCallReply {
+ __be16 callID;
+ __be16 peersCallID;
+ __u8 resultCode;
+ __u8 generalErrorCode;
+ __be16 packetWindow;
+ __be16 packetProcDelay;
+ __u16 reserved;
+};
+
+struct PptpInCallConnected {
+ __be16 peersCallID;
+ __u16 reserved;
+ __be32 connectSpeed;
+ __be16 packetWindow;
+ __be16 packetProcDelay;
+ __be32 callFramingType;
+};
+
+struct PptpClearCallRequest {
+ __be16 callID;
+ __u16 reserved;
+};
+
+struct PptpCallDisconnectNotify {
+ __be16 callID;
+ __u8 resultCode;
+ __u8 generalErrorCode;
+ __be16 causeCode;
+ __u16 reserved;
+ __u8 callStatistics[128];
+};
+
+struct PptpWanErrorNotify {
+ __be16 peersCallID;
+ __u16 reserved;
+ __be32 crcErrors;
+ __be32 framingErrors;
+ __be32 hardwareOverRuns;
+ __be32 bufferOverRuns;
+ __be32 timeoutErrors;
+ __be32 alignmentErrors;
+};
+
+struct PptpSetLinkInfo {
+ __be16 peersCallID;
+ __u16 reserved;
+ __be32 sendAccm;
+ __be32 recvAccm;
+};
+
+union pptp_ctrl_union {
+ struct PptpStartSessionRequest sreq;
+ struct PptpStartSessionReply srep;
+ struct PptpStopSessionRequest streq;
+ struct PptpStopSessionReply strep;
+ struct PptpOutCallRequest ocreq;
+ struct PptpOutCallReply ocack;
+ struct PptpInCallRequest icreq;
+ struct PptpInCallReply icack;
+ struct PptpInCallConnected iccon;
+ struct PptpClearCallRequest clrreq;
+ struct PptpCallDisconnectNotify disc;
+ struct PptpWanErrorNotify wanerr;
+ struct PptpSetLinkInfo setlink;
+};
+
+/* crap needed for nf_conntrack_compat.h */
+struct nf_conn;
+struct nf_conntrack_expect;
+
+extern int
+(*nf_nat_pptp_hook_outbound)(struct sk_buff **pskb,
+ struct nf_conn *ct, enum ip_conntrack_info ctinfo,
+ struct PptpControlHeader *ctlh,
+ union pptp_ctrl_union *pptpReq);
+
+extern int
+(*nf_nat_pptp_hook_inbound)(struct sk_buff **pskb,
+ struct nf_conn *ct, enum ip_conntrack_info ctinfo,
+ struct PptpControlHeader *ctlh,
+ union pptp_ctrl_union *pptpReq);
+
+extern void
+(*nf_nat_pptp_hook_exp_gre)(struct nf_conntrack_expect *exp_orig,
+ struct nf_conntrack_expect *exp_reply);
+
+extern void
+(*nf_nat_pptp_hook_expectfn)(struct nf_conn *ct,
+ struct nf_conntrack_expect *exp);
+
+#endif /* __KERNEL__ */
+#endif /* _NF_CONNTRACK_PPTP_H */
git://git.onelab.eu / linux-2.6.git / blobdiff