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slip.h
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1990-11-09
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2KB
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54 lines
#ifndef _SLIP_H
#define _SLIP_H
#ifndef _GLOBAL_H
#include "global.h"
#endif
#ifndef _PPP_H
#include "ppp.h"
#endif
#ifndef _SLCOMPRESS_H
#include "slcompre.h"
#endif
#define SLIP_MAX 5 /* Maximum number of slip channels */
/* SLIP definitions */
#define SLIP_ALLOC 100 /* Receiver allocation increment */
#define FR_END 0300 /* Frame End */
#define FR_ESC 0333 /* Frame Escape */
#define T_FR_END 0334 /* Transposed frame end */
#define T_FR_ESC 0335 /* Transposed frame escape */
/* Slip protocol control structure */
struct slip {
struct iface *iface;
char escaped; /* Receiver State control flag */
#define SLIP_FLAG 0x01 /* Last char was a frame escape */
#define SLIP_VJCOMPR 0x02 /* TCP header compression enabled */
struct mbuf *rbp; /* Head of mbuf chain being filled */
struct mbuf *rbp1; /* Pointer to mbuf currently being written */
char *rcp; /* Write pointer */
int16 rcnt; /* Length of mbuf chain */
struct mbuf *tbp; /* Transmit mbuf being sent */
int16 errors; /* Receiver input errors */
int type; /* Protocol of input */
int (*send)(int,struct mbuf *); /* Routine to send mbufs */
int (*get)(int); /* Routine to fetch input chars */
int (*get_rlsd)(int, int); /* Routine to monitor RLSD signal */
struct slcompress *slcomp; /* TCP header compression table */
struct pppctl *pppio; /* Control structure for PPP interfaces */
};
extern struct slip Slip[];
/* In slip.c: */
void asy_rx __ARGS((int xdev,void *p1,void *p2));
void asytxdone __ARGS((int dev));
int slip_raw __ARGS((struct iface *iface,struct mbuf *data));
int slip_send __ARGS((struct mbuf *bp,struct iface *iface,int32 gateway,int prec,
int del,int tput,int rel));
void doslstat __ARGS((struct iface *iface));
#endif /* _SLIP_H */