Category : Network Files
Archive   : KA9Q.ZIP
Filename : SLIP.H

/* SLIP definitions */
#define SLIP_ALLOC 40 /* 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 mbuf *sndq; /* Encapsulated packets awaiting transmission */
int16 sndcnt; /* Number of datagrams on queue */
char escaped; /* Receiver State control flag */
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 */
void (*recv)(); /* Function to call with an incoming buffer */
};
extern struct slip slip[];