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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
ab10dccb GF |
2 | #ifndef _NET_PPTP_H |
3 | #define _NET_PPTP_H | |
4 | ||
5 | #define PPP_LCP_ECHOREQ 0x09 | |
6 | #define PPP_LCP_ECHOREP 0x0A | |
7 | #define SC_RCV_BITS (SC_RCV_B7_1|SC_RCV_B7_0|SC_RCV_ODDP|SC_RCV_EVNP) | |
8 | ||
9 | #define MISSING_WINDOW 20 | |
10 | #define WRAPPED(curseq, lastseq)\ | |
11 | ((((curseq) & 0xffffff00) == 0) &&\ | |
12 | (((lastseq) & 0xffffff00) == 0xffffff00)) | |
13 | ||
ab10dccb GF |
14 | #define PPTP_HEADER_OVERHEAD (2+sizeof(struct pptp_gre_header)) |
15 | struct pptp_gre_header { | |
03459345 | 16 | struct gre_base_hdr gre_hd; |
ab10dccb GF |
17 | __be16 payload_len; |
18 | __be16 call_id; | |
19 | __be32 seq; | |
20 | __be32 ack; | |
21 | } __packed; | |
22 | ||
23 | ||
24 | #endif |