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

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*-
        !            23:  * Copyright (c) 1991, 1993
        !            24:  *     The Regents of the University of California.  All rights reserved.
        !            25:  *
        !            26:  * Redistribution and use in source and binary forms, with or without
        !            27:  * modification, are permitted provided that the following conditions
        !            28:  * are met:
        !            29:  * 1. Redistributions of source code must retain the above copyright
        !            30:  *    notice, this list of conditions and the following disclaimer.
        !            31:  * 2. Redistributions in binary form must reproduce the above copyright
        !            32:  *    notice, this list of conditions and the following disclaimer in the
        !            33:  *    documentation and/or other materials provided with the distribution.
        !            34:  * 3. All advertising materials mentioning features or use of this software
        !            35:  *    must display the following acknowledgement:
        !            36:  *     This product includes software developed by the University of
        !            37:  *     California, Berkeley and its contributors.
        !            38:  * 4. Neither the name of the University nor the names of its contributors
        !            39:  *    may be used to endorse or promote products derived from this software
        !            40:  *    without specific prior written permission.
        !            41:  *
        !            42:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            43:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            44:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            45:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            46:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            47:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            48:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            49:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            50:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            51:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            52:  * SUCH DAMAGE.
        !            53:  *
        !            54:  *     @(#)if_slvar.h  8.3 (Berkeley) 2/1/94
        !            55:  *
        !            56:  */
        !            57: 
        !            58: #ifndef _NET_IF_SLVAR_H_
        !            59: #define _NET_IF_SLVAR_H_
        !            60: 
        !            61: #include <sys/callout.h>
        !            62: #include <sys/mbuf.h>
        !            63: #include <net/slcompress.h>
        !            64: 
        !            65: 
        !            66: /*
        !            67:  * Definitions for SLIP interface data structures
        !            68:  *
        !            69:  * (This exists so programs like slstats can get at the definition
        !            70:  *  of sl_softc.)
        !            71:  */
        !            72: struct sl_softc {
        !            73:        struct  ifnet sc_if;            /* network-visible interface */
        !            74:        struct  ifqueue sc_fastq;       /* interactive output queue */
        !            75:        struct  tty *sc_ttyp;           /* pointer to tty structure */
        !            76:        u_char  *sc_mp;                 /* pointer to next available buf char */
        !            77:        u_char  *sc_ep;                 /* pointer to last available buf char */
        !            78:        u_char  *sc_buf;                /* input buffer */
        !            79:        u_int   sc_flags;               /* see below */
        !            80:        u_int   sc_escape;      /* =1 if last char input was FRAME_ESCAPE */
        !            81:        long    sc_lasttime;            /* last time a char arrived */
        !            82:        long    sc_abortcount;          /* number of abort escape chars */
        !            83:        long    sc_starttime;           /* time of first abort in window */
        !            84:        u_int   sc_keepalive;           /* time to decide link hang */
        !            85:        u_int   sc_outfill;     /* time to send FRAME_END when output idle */
        !            86:                                        /*
        !            87:                                         * Handles for scheduling outfill and
        !            88:                                         * keepalive timeouts.
        !            89:                                         */
        !            90: #if FB3x
        !            91:        struct  callout_handle  sc_ofhandle;
        !            92:        struct  callout_handle  sc_kahandle;
        !            93: #endif
        !            94:        struct  slcompress sc_comp;     /* tcp compression data */
        !            95: };
        !            96: 
        !            97: /* internal flags */
        !            98: #define        SC_ERROR        0x0001          /* had an input error */
        !            99: #define        SC_OUTWAIT      0x0002          /* waiting for output fill */
        !           100: #define        SC_KEEPALIVE    0x0004          /* input keepalive */
        !           101: #define SC_STATIC       0x0008          /* it is static unit */
        !           102: 
        !           103: /* visible flags */
        !           104: #define        SC_COMPRESS     IFF_LINK0       /* compress TCP traffic */
        !           105: #define        SC_NOICMP       IFF_LINK1       /* suppress ICMP traffic */
        !           106: #define        SC_AUTOCOMP     IFF_LINK2       /* auto-enable TCP compression */
        !           107: 
        !           108: 
        !           109: #endif

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