* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
* %sccs.include.redist.c%
* @(#)if_slvar.h 8.3 (Berkeley) %G%
* $Header: if_slvar.h,v 1.3 89/05/31 02:25:18 van Exp $
* 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_abortcount
; /* number of abort esacpe chars */
long sc_starttime
; /* time of first abort in window */
struct slcompress sc_comp
; /* tcp compression data */
caddr_t sc_bpf
; /* BPF data */
#define SC_ERROR 0x0001 /* had an input error */
#define SC_COMPRESS IFF_LINK0 /* compress TCP traffic */
#define SC_NOICMP IFF_LINK1 /* supress ICMP traffic */
#define SC_AUTOCOMP IFF_LINK2 /* auto-enable TCP compression */
void slattach
__P((void));
void slclose
__P((struct tty
*));
void slinput
__P((int, struct tty
*));
int slioctl
__P((struct ifnet
*, int, caddr_t
));
int slopen
__P((dev_t
, struct tty
*));
int sloutput
__P((struct ifnet
*,
struct mbuf
*, struct sockaddr
*, struct rtentry
*));
void slstart
__P((struct tty
*));
int sltioctl
__P((struct tty
*, int, caddr_t
, int));