NetBSD/sys/net/if_tun.h

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/* $NetBSD: if_tun.h,v 1.11 2003/09/21 19:17:16 jdolecek Exp $ */
/*
* Copyright (c) 1988, Julian Onions <jpo@cs.nott.ac.uk>
* Nottingham University 1987.
*
* This source may be freely distributed, however I would be interested
* in any changes that are made.
*
* This driver takes packets off the IP i/f and hands them up to a
* user process to have it's wicked way with. This driver has it's
* roots in a similar driver written by Phil Cockcroft (formerly) at
* UCL. This driver is based much more on read/write/select mode of
* operation though.
*
1998-01-05 08:08:43 +03:00
* from: Header: if_tnreg.h,v 1.1.2.1 1992/07/16 22:39:16 friedl Exp
*/
#ifndef _NET_IF_TUN_H_
#define _NET_IF_TUN_H_
#ifdef _KERNEL
struct tun_softc {
struct ifnet tun_if; /* the interface */
u_short tun_flags; /* misc flags */
#define TUN_OPEN 0x0001
#define TUN_INITED 0x0002
#define TUN_RCOLL 0x0004
#define TUN_IASET 0x0008
#define TUN_DSTADDR 0x0010
#define TUN_RWAIT 0x0040
#define TUN_ASYNC 0x0080
#define TUN_NBIO 0x0100
#define TUN_PREPADDR 0x0200
#define TUN_READY (TUN_OPEN | TUN_INITED | TUN_IASET)
pid_t tun_pgid; /* PID or process group ID */
struct selinfo tun_rsel; /* read select */
struct selinfo tun_wsel; /* write select (not used) */
int tun_unit; /* the tunnel unit number */
struct simplelock tun_lock; /* lock for this tunnel */
LIST_ENTRY(tun_softc) tun_list; /* list of all tuns */
};
#endif /* _KERNEL */
/* Maximum packet size */
#define TUNMTU 1500
/* ioctl's for get/set debug */
#define TUNSDEBUG _IOW('t', 90, int)
#define TUNGDEBUG _IOR('t', 89, int)
#define TUNSIFMODE _IOW('t', 88, int)
#define TUNSLMODE _IOW('t', 87, int)
#endif /* !_NET_IF_TUN_H_ */