/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 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. 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
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)if_slvar.h 8.4 (Berkeley) 1/9/95
*/
#ifndef _NET_IF_SLVAR_H_
#define _NET_IF_SLVAR_H_
/*
* Definitions for SLIP interface data structures
*
* (This exists so programs like slstats can get at the definition
* of sl_softc.)
*/
struct sl_softc {
struct ifnet sc_if; /* network-visible interface */
int sc_unit; /* XXX unit number */
struct ifqueue sc_fastq; /* interactive output queue */
struct ifqueue sc_inq; /* input 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_pktstart; /* pointer to beginning of packet */
struct mbuf *sc_mbuf; /* 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_abortcount; /* number of abort escape chars */
long sc_starttime; /* time of first abort in window */
long sc_oqlen; /* previous output queue size */
long sc_otimeout; /* number of times output's stalled */
void *sc_si; /* softintr handle */
#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
struct bintime sc_lastpacket; /* for watchdog */
LIST_ENTRY(sl_softc) sc_iflist;
};
/* internal flags */
#define SC_ERROR 0x0001 /* had an input error */
