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Annotation of 43BSDReno/sys/net/if_slvar.h, revision 1.1.1.1

1.1       root        1: /*     @(#)if_slvar.h  7.4 (Berkeley) 1/20/90 */
                      2: 
                      3: /*
                      4:  * Definitions for SLIP interface data structures
                      5:  * 
                      6:  * (this exists so programs like slstats can get at the definition
                      7:  *  of sl_softc.)
                      8:  *
                      9:  * $Header: if_slvar.h,v 1.3 89/05/31 02:25:18 van Exp $
                     10:  */
                     11: struct sl_softc {
                     12:        struct  ifnet sc_if;            /* network-visible interface */
                     13:        struct  ifqueue sc_fastq;       /* interactive output queue */
                     14:        struct  tty *sc_ttyp;           /* pointer to tty structure */
                     15:        u_char  *sc_mp;                 /* pointer to next available buf char */
                     16:        u_char  *sc_ep;                 /* pointer to last available buf char */
                     17:        u_char  *sc_buf;                /* input buffer */
                     18:        u_int   sc_flags;               /* see below */
                     19:        u_int   sc_escape;      /* =1 if last char input was FRAME_ESCAPE */
                     20:        u_int   sc_bytessent;
                     21:        u_int   sc_bytesrcvd;
                     22:        long    sc_lasttime;            /* last time a char arrived */
                     23:        long    sc_starttime;           /* last time a char arrived */
                     24:        long    sc_abortcount;          /* number of abort esacpe chars */
                     25: #ifdef INET                            /* XXX */
                     26:        struct  slcompress sc_comp;     /* tcp compression data */
                     27: #endif
                     28: };
                     29: 
                     30: /* visible flags */
                     31: #define        SC_COMPRESS     0x0002          /* compress TCP traffic */
                     32: #define        SC_NOICMP       0x0004          /* supress ICMP traffic */
                     33: #define        SC_AUTOCOMP     0x0008          /* auto-enable TCP compression */
                     34: /* internal flags (should be separate) */
                     35: #define        SC_ABORT        0x10000         /* have been sent an abort request */
                     36: 
                     37: /* this stuff doesn't belong here... */
                     38: #define        SLIOCGFLAGS     _IOR('t', 90, int)      /* get configuration flags */
                     39: #define        SLIOCSFLAGS     _IOW('t', 89, int)      /* set configuration flags */
                     40: #define        SLIOGUNIT       _IOW('t', 88, int)      /* get slip unit number */

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