03459345bc
1. Use struct gre_base_hdr directly in pptp_gre_header instead of duplicated members; 2. Use existing macros like GRE_KEY, GRE_SEQ, and so on instead of duplicated macros defined by PPTP; 3. Add new macros like GRE_IS_ACK/SEQ and so on instead of PPTP_GRE_IS_A/S and so on; Signed-off-by: Gao Feng <fgao@ikuai8.com> Reviewed-by: Philip Prindeville <philipp@redfish-solutions.com> Signed-off-by: David S. Miller <davem@davemloft.net>
24 lines
518 B
C
24 lines
518 B
C
#ifndef _NET_PPTP_H
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#define _NET_PPTP_H
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#define PPP_LCP_ECHOREQ 0x09
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#define PPP_LCP_ECHOREP 0x0A
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#define SC_RCV_BITS (SC_RCV_B7_1|SC_RCV_B7_0|SC_RCV_ODDP|SC_RCV_EVNP)
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#define MISSING_WINDOW 20
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#define WRAPPED(curseq, lastseq)\
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((((curseq) & 0xffffff00) == 0) &&\
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(((lastseq) & 0xffffff00) == 0xffffff00))
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#define PPTP_HEADER_OVERHEAD (2+sizeof(struct pptp_gre_header))
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struct pptp_gre_header {
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struct gre_base_hdr gre_hd;
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__be16 payload_len;
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__be16 call_id;
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__be32 seq;
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__be32 ack;
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} __packed;
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#endif
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