| 1 |
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| 2 | #ifndef _NET_PPTP_H
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| 3 | #define _NET_PPTP_H
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| 4 |
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| 5 | #include <linux/types.h>
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| 6 | #include <net/gre.h>
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| 7 |
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| 8 | #define PPP_LCP_ECHOREQ 0x09
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| 9 | #define PPP_LCP_ECHOREP 0x0A
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| 10 | #define SC_RCV_BITS (SC_RCV_B7_1|SC_RCV_B7_0|SC_RCV_ODDP|SC_RCV_EVNP)
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| 11 |
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| 12 | #define MISSING_WINDOW 20
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| 13 | #define WRAPPED(curseq, lastseq)\
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| 14 | ((((curseq) & 0xffffff00) == 0) &&\
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| 15 | (((lastseq) & 0xffffff00) == 0xffffff00))
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| 16 |
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| 17 | #define PPTP_HEADER_OVERHEAD (2+sizeof(struct pptp_gre_header))
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| 18 | struct pptp_gre_header {
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| 19 | struct gre_base_hdr gre_hd;
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| 20 | __be16 payload_len;
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| 21 | __be16 call_id;
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| 22 | __be32 seq;
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| 23 | __be32 ack;
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| 24 | } __packed;
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| 25 |
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| 26 |
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| 27 | #endif
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