* Copyright (c) 1991 The Regents of the University of California.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* from: @(#)if_slvar.h 7.7 (Berkeley) 5/7/91
* Definitions for SLIP interface data structures
* (This exists so programs like slstats can get at the definition
struct ifnet sc_if
; /* network-visible interface */
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_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_starttime
; /* last time a char arrived */
long sc_abortcount
; /* number of abort esacpe chars */
struct slcompress sc_comp
; /* tcp compression data */
#define SC_COMPRESS 0x0002 /* compress TCP traffic */
#define SC_NOICMP 0x0004 /* supress ICMP traffic */
#define SC_AUTOCOMP 0x0008 /* auto-enable TCP compression */
/* internal flags (should be separate) */
#define SC_ERROR 0x08000 /* had an input error - 30 Aug 92*/
#define SC_ABORT 0x10000 /* have been sent an abort request */
/* this stuff doesn't belong here... */
#define SLIOCGFLAGS _IOR('t', 90, int) /* get configuration flags */
#define SLIOCSFLAGS _IOW('t', 89, int) /* set configuration flags */
#define SLIOCGUNIT _IOR('t', 88, int) /* get slip unit number */