Subversion Repositories SvarDOS

/*!\file net/if_strip.h
 * SLIP interface structures.
 */

/*      $NetBSD: if_stripvar.h,v 1.4.8.1 1997/11/17 23:36:16 thorpej Exp $      */

/*
 * Definitions for SLIP interface data structures
 * 
 * (This exists so programs like slstats can get at the definition
 *  of sl_softc.)
 */

#ifndef __NET_IF_STRIP_H
#define __NET_IF_STRIP_H

struct strip_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_char  *sc_xxx;                /* XXX don't ask... */
        u_int   sc_flags;               /* see below */
        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


        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 */

#endif