/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _NET_PPTP_H #define _NET_PPTP_H #include <linux/types.h> #include <net/gre.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