87 lines
3.6 KiB
C
87 lines
3.6 KiB
C
/*-
|
|
* 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. 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
|
|
* 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 8.3 (Berkeley) 2/1/94
|
|
*
|
|
* $FreeBSD: src/sys/net/if_slvar.h,v 1.21 2001/10/27 20:31:24 dillon Exp $
|
|
*/
|
|
|
|
#ifndef _NET_IF_SLVAR_H_
|
|
#define _NET_IF_SLVAR_H_
|
|
|
|
#include <sys/callout.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 */
|
|
struct ifqueue sc_fastq; /* interactive output queue */
|
|
struct tty *sc_ttyp; /* pointer to tty structure */
|
|
struct mbuf *sc_mbuf; /* pointer to mbuf containing buffer */
|
|
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 */
|
|
time_t sc_lasttime; /* last time a char arrived */
|
|
long sc_abortcount; /* number of abort escape chars */
|
|
time_t sc_starttime; /* time of first abort in window */
|
|
u_int sc_keepalive; /* time to decide link hang */
|
|
u_int sc_outfill; /* time to send FRAME_END when output idle */
|
|
/*
|
|
* Handles for scheduling outfill and
|
|
* keepalive timeouts.
|
|
*/
|
|
struct callout_handle sc_ofhandle;
|
|
struct callout_handle sc_kahandle;
|
|
struct slcompress sc_comp; /* tcp compression data */
|
|
LIST_ENTRY(sl_softc) sl_next;
|
|
u_char *bpfbuf; /* hang buffer for bpf here */
|
|
};
|
|
|
|
/* internal flags */
|
|
#define SC_ERROR 0x0001 /* had an input error */
|
|
#define SC_OUTWAIT 0x0002 /* waiting for output fill */
|
|
#define SC_KEEPALIVE 0x0004 /* input keepalive */
|
|
|
|
/* visible flags */
|
|
#define SC_COMPRESS IFF_LINK0 /* compress TCP traffic */
|
|
#define SC_NOICMP IFF_LINK1 /* suppress ICMP traffic */
|
|
#define SC_AUTOCOMP IFF_LINK2 /* auto-enable TCP compression */
|
|
|
|
|
|
#endif
|