1/* SPDX-License-Identifier: GPL-2.0 */
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
14#define PPTP_HEADER_OVERHEAD (2+sizeof(struct pptp_gre_header))
15struct pptp_gre_header {
16 struct gre_base_hdr gre_hd;
17 __be16 payload_len;
18 __be16 call_id;
19 __be32 seq;
20 __be32 ack;
21} __packed;
22
23
24#endif
25