76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/* $NetBSD: if_tun.h,v 1.22 2022/03/13 21:32:43 riastradh Exp $ */
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/*
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* Copyright (c) 1988, Julian Onions <jpo@cs.nott.ac.uk>
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* Nottingham University 1987.
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*
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* This source may be freely distributed, however I would be interested
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* in any changes that are made.
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*
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* This driver takes packets off the IP i/f and hands them up to a
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* user process to have its wicked way with. This driver has its
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* roots in a similar driver written by Phil Cockcroft (formerly) at
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* UCL. This driver is based much more on read/write/select mode of
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* operation though.
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*
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* from: Header: if_tnreg.h,v 1.1.2.1 1992/07/16 22:39:16 friedl Exp
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*/
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#ifndef _NET_IF_TUN_H_
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#define _NET_IF_TUN_H_
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#include <sys/ioccom.h>
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#ifdef _KERNEL
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#include <sys/types.h>
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#include <sys/condvar.h>
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#include <sys/mutex.h>
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#include <sys/queue.h>
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#include <sys/select.h>
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#include <net/if.h>
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struct tun_softc {
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struct ifnet tun_if; /* the interface */
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u_short tun_flags; /* misc flags */
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#define TUN_OPEN 0x0001
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#define TUN_INITED 0x0002
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#define TUN_RCOLL 0x0004
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#define TUN_IASET 0x0008
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#define TUN_DSTADDR 0x0010
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#define TUN_UNUSED0 0x0040 /* was TUN_RWAIT */
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#define TUN_ASYNC 0x0080
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#define TUN_NBIO 0x0100
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#define TUN_PREPADDR 0x0200
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#define TUN_IFHEAD 0x0400
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#define TUN_READY (TUN_OPEN | TUN_INITED | TUN_IASET)
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pid_t tun_pgid; /* PID or process group ID */
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struct selinfo tun_rsel; /* read select */
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struct selinfo tun_wsel; /* write select (not used) */
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int tun_unit; /* the tunnel unit number */
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kmutex_t tun_lock; /* lock for this tunnel */
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kcondvar_t tun_cv; /* condition variable for tunnel */
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LIST_ENTRY(tun_softc) tun_list; /* list of all tuns */
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void *tun_osih; /* soft interrupt handle */
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void *tun_isih; /* soft interrupt handle */
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};
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#endif /* _KERNEL */
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/* Maximum packet size */
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#define TUNMTU 1500
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/* ioctl's for get/set debug */
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#define TUNSDEBUG _IOW('t', 90, int)
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#define TUNGDEBUG _IOR('t', 89, int)
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#define TUNSIFMODE _IOW('t', 88, int)
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#define TUNSLMODE _IOW('t', 87, int)
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#define TUNSIFHEAD _IOW('t', 66, int)
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#define TUNGIFHEAD _IOR('t', 65, int)
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#endif /* !_NET_IF_TUN_H_ */
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