1 /* SPDX-License-Identifier: GPL-2.0 */
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)
9 #define MISSING_WINDOW 20
10 #define WRAPPED(curseq, lastseq)\
11 ((((curseq) & 0xffffff00) == 0) &&\
12 (((lastseq) & 0xffffff00) == 0xffffff00))
14 #define PPTP_HEADER_OVERHEAD (2+sizeof(struct pptp_gre_header))
15 struct pptp_gre_header {
16 struct gre_base_hdr gre_hd;