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The Datafile PD-CD 3
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PDCD_3.iso
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netlite
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SLIP
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1993-03-27
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1KB
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28 lines
/* 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 */
};
/* In SLIP */
int slip_send(struct mbuf *, struct interface *, int32, char, char, char, char);
int slip_raw(struct interface *, struct mbuf *);
int doslip(struct interface *);
void slip_recv(struct interface *, struct mbuf *);