| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _NET_PPTP_H |
| 3 | #define _NET_PPTP_H |
| 4 | |
| 5 | #include <linux/types.h> |
| 6 | #include <net/gre.h> |
| 7 | |
| 8 | #define PPP_LCP_ECHOREQ 0x09 |
| 9 | #define PPP_LCP_ECHOREP 0x0A |
| 10 | #define SC_RCV_BITS (SC_RCV_B7_1|SC_RCV_B7_0|SC_RCV_ODDP|SC_RCV_EVNP) |
| 11 | |
| 12 | #define MISSING_WINDOW 20 |
| 13 | #define WRAPPED(curseq, lastseq)\ |
| 14 | ((((curseq) & 0xffffff00) == 0) &&\ |
| 15 | (((lastseq) & 0xffffff00) == 0xffffff00)) |
| 16 | |
| 17 | #define (2+sizeof(struct pptp_gre_header)) |
| 18 | struct { |
| 19 | struct gre_base_hdr ; |
| 20 | __be16 ; |
| 21 | __be16 ; |
| 22 | __be32 ; |
| 23 | __be32 ; |
| 24 | } __packed; |
| 25 | |
| 26 | |
| 27 | #endif |
| 28 | |