-#include <sys/ioccom.h>
-
-#define PPP_HDRLEN 4 /* octets for standard ppp header */
-#define PPP_FCSLEN 2 /* octets for FCS */
-
-#define PPP_ADDRESS(cp) ((cp)[0])
-#define PPP_CONTROL(cp) ((cp)[1])
-#define PPP_PROTOCOL(cp) (((cp)[2] << 8) + (cp)[3])
-
-#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */
-#define PPP_UI 0x03 /* Unnumbered Information */
-#define PPP_FLAG 0x7e /* Flag Sequence */
-#define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */
-#define PPP_TRANS 0x20 /* Asynchronous transparency modifier */
-
-/*
- * Protocol field values.
- */
-#define PPP_IP 0x21 /* Internet Protocol */
-#define PPP_XNS 0x25 /* Xerox NS */
-#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */
-#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */
-#define PPP_COMP 0xfd /* compressed packet */
-#define PPP_LCP 0xc021 /* Link Control Protocol */
-#define PPP_CCP 0x80fd /* Compression Control Protocol */
-
-/*
- * Important FCS values.
- */
-#define PPP_INITFCS 0xffff /* Initial FCS value */
-#define PPP_GOODFCS 0xf0b8 /* Good final FCS value */
-#define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
-