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Annotation of kernel/bsd/net/if_slvar.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
        !            26: /*-
        !            27:  * Copyright (c) 1991, 1993
        !            28:  *     The Regents of the University of California.  All rights reserved.
        !            29:  *
        !            30:  * Redistribution and use in source and binary forms, with or without
        !            31:  * modification, are permitted provided that the following conditions
        !            32:  * are met:
        !            33:  * 1. Redistributions of source code must retain the above copyright
        !            34:  *    notice, this list of conditions and the following disclaimer.
        !            35:  * 2. Redistributions in binary form must reproduce the above copyright
        !            36:  *    notice, this list of conditions and the following disclaimer in the
        !            37:  *    documentation and/or other materials provided with the distribution.
        !            38:  * 3. All advertising materials mentioning features or use of this software
        !            39:  *    must display the following acknowledgement:
        !            40:  *     This product includes software developed by the University of
        !            41:  *     California, Berkeley and its contributors.
        !            42:  * 4. Neither the name of the University nor the names of its contributors
        !            43:  *    may be used to endorse or promote products derived from this software
        !            44:  *    without specific prior written permission.
        !            45:  *
        !            46:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            47:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            48:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            49:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            50:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            51:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            52:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            53:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            54:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            55:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            56:  * SUCH DAMAGE.
        !            57:  *
        !            58:  *     @(#)if_slvar.h  8.4 (Berkeley) 1/9/95
        !            59:  *
        !            60:  *     @(#)if_slvar.h  8.3 (Berkeley) 2/1/94
        !            61:  */
        !            62: 
        !            63: /*
        !            64:  * Definitions for SLIP interface data structures
        !            65:  * 
        !            66:  * (This exists so programs like slstats can get at the definition
        !            67:  *  of sl_softc.)
        !            68:  */
        !            69: struct sl_softc {
        !            70:        struct  ifnet sc_if;            /* network-visible interface */
        !            71:        struct  ifqueue sc_fastq;       /* interactive output queue */
        !            72:        struct  tty *sc_ttyp;           /* pointer to tty structure */
        !            73:        u_char  *sc_mp;                 /* pointer to next available buf char */
        !            74:        u_char  *sc_ep;                 /* pointer to last available buf char */
        !            75:        u_char  *sc_buf;                /* input buffer */
        !            76:        u_int   sc_flags;               /* see below */
        !            77:        u_int   sc_escape;      /* =1 if last char input was FRAME_ESCAPE */
        !            78:        long    sc_lasttime;            /* last time a char arrived */
        !            79:        long    sc_abortcount;          /* number of abort esacpe chars */
        !            80:        long    sc_starttime;           /* time of first abort in window */
        !            81:        long    sc_oqlen;               /* previous output queue size */
        !            82:        long    sc_otimeout;            /* number of times output's stalled */
        !            83:        int     sc_oldbufsize;          /* previous output buffer size */
        !            84:        int     sc_oldbufquot;          /* previous output buffer quoting */
        !            85: #if INET                               /* XXX */
        !            86:        struct  slcompress sc_comp;     /* tcp compression data */
        !            87: #endif
        !            88:        caddr_t sc_bpf;                 /* BPF data */
        !            89: };
        !            90: 
        !            91: /* internal flags */
        !            92: #define        SC_ERROR        0x0001          /* had an input error */
        !            93: 
        !            94: /* visible flags */
        !            95: #define        SC_COMPRESS     IFF_LINK0       /* compress TCP traffic */
        !            96: #define        SC_NOICMP       IFF_LINK1       /* supress ICMP traffic */
        !            97: #define        SC_AUTOCOMP     IFF_LINK2       /* auto-enable TCP compression */
        !            98: 
        !            99: #ifdef _KERNEL
        !           100: void   slattach __P((void));
        !           101: void   slclose __P((struct tty *));
        !           102: void   slinput __P((int, struct tty *));
        !           103: int    slioctl __P((struct ifnet *, u_long, caddr_t));
        !           104: int    slopen __P((dev_t, struct tty *));
        !           105: int    sloutput __P((struct ifnet *,
        !           106:            struct mbuf *, struct sockaddr *, struct rtentry *));
        !           107: void   slstart __P((struct tty *));
        !           108: int    sltioctl __P((struct tty *, u_long, caddr_t, int));
        !           109: #endif /* _KERNEL */

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