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/* $OpenBSD: if_stripvar.h,v 1.4 1997/02/24 13:34:02 niklas Exp $ */
/* $NetBSD: if_stripvar.h,v 1.2.4.1 1996/08/05 20:37:51 jtc Exp $ */
/*
* Definitions for SLIP interface data structures
*
* (This exists so programs like slstats can get at the definition
* of sl_softc.)
*/
struct st_softc {
struct ifnet sc_if; /* network-visible interface */
int sc_unit; /* XXX unit number */
struct ifqueue sc_fastq; /* interactive output queue */
struct tty *sc_ttyp; /* pointer to tty structure */
u_char *sc_mp; /* pointer to next available buf char */
u_char *sc_ep; /* pointer to last available buf char */
u_char *sc_buf; /* input buffer */
u_char *sc_rxbuf; /* input destuffing buffer */
u_char *sc_txbuf; /* output stuffing buffer */
u_int sc_flags; /* see below */
long sc_oqlen; /* previous output queue size */
long sc_otimeout; /* number of times output's stalled */
#if defined(__NetBSD__) || defined(__OpenBSD__)
int sc_oldbufsize; /* previous output buffer size */
int sc_oldbufquot; /* previous output buffer quoting */
#endif
#ifdef INET /* XXX */
struct slcompress sc_comp; /* tcp compression data */
#endif
int sc_state; /* Radio reset state-machine */
#define ST_ALIVE 0x0 /* answered probe */
#define ST_PROBE_SENT 0x1 /* probe sent, answer pending */
#define ST_DEAD 0x2 /* no answer to probe; do reset */
long sc_statetimo; /* When (secs) current state ends */
caddr_t sc_bpf; /* BPF data */
};
/* Internal flags */
#define SC_ERROR 0x0001 /* Incurred error reading current pkt*/
#define SC_TIMEOUT 0x00000400 /* timeout is currently pending */
/* visible flags */
#define SC_COMPRESS IFF_LINK0 /* compress TCP traffic */
#define SC_NOICMP IFF_LINK1 /* supress ICMP traffic */
#define SC_AUTOCOMP IFF_LINK2 /* auto-enable TCP compression */
#ifdef _KERNEL
void stripattach __P((int n));
void stripclose __P((struct tty *));
void stripinput __P((int, struct tty *));
int stripioctl __P((struct ifnet *, u_long, caddr_t));
int stripopen __P((dev_t, struct tty *));
int stripoutput __P((struct ifnet *,
struct mbuf *, struct sockaddr *, struct rtentry *));
void stripstart __P((struct tty *));
int striptioctl __P((struct tty *, u_long, caddr_t, int));
#endif /* _KERNEL */
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