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/* $NetBSD: if_stripvar.h,v 1.2 1996/05/19 22:09:45 jonathan 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 */
u_int sc_escape; /* =1 if last char input was FRAME_ESCAPE */
long sc_lasttime; /* last time a char arrived */
long sc_abortcount; /* number of abort esacpe chars */
long sc_starttime; /* time of first abort in window */
long sc_oqlen; /* previous output queue size */
long sc_otimeout; /* number of times output's stalled */
#ifdef NetBSD
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
caddr_t sc_bpf; /* BPF data */
};
/* internal flags */
#define SC_ERROR 0x0001 /* had an input error */
/* 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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