Release 4.12 include/net/pptp.h

#ifndef _NET_PPTP_H

#define _NET_PPTP_H


#define PPP_LCP_ECHOREQ 0x09

#define PPP_LCP_ECHOREP 0x0A

#define SC_RCV_BITS     (SC_RCV_B7_1|SC_RCV_B7_0|SC_RCV_ODDP|SC_RCV_EVNP)


#define MISSING_WINDOW 20

#define WRAPPED(curseq, lastseq)\
	((((curseq) & 0xffffff00) == 0) &&\
        (((lastseq) & 0xffffff00) == 0xffffff00))


#define PPTP_HEADER_OVERHEAD (2+sizeof(struct pptp_gre_header))

struct pptp_gre_header {
	
struct gre_base_hdr gre_hd;
	
__be16 payload_len;
	
__be16 call_id;
	
__be32 seq;
	
__be32 ack;

} __packed;


#endif
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