1 files changed, 72 insertions, 0 deletions

diff --git a/sys/net/if_tun.h b/sys/net/if_tun.h
new file mode 100644
index 0000000..fbb5fa2
--- /dev/null
+++ b/sys/net/if_tun.h
@@ -0,0 +1,72 @@
+/*
+ * 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.
+ * 
+ * from: $Header: if_tnreg.h,v 1.1.2.1 1992/07/16 22:39:16 friedl Exp
+ * $Id: if_tun.h,v 1.3 1993/12/13 14:27:01 deraadt Exp $
+ */
+
+#ifndef _NET_IF_TUN_H_
+#define _NET_IF_TUN_H_
+
+struct tun_softc {
+	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
+#ifdef notdef
+#define	TUN_READY	0x0020
+#else
+#define TUN_READY       (TUN_IASET|TUN_OPEN|TUN_DSTADDR)
+#endif
+#define	TUN_RWAIT	0x0040
+#define	TUN_ASYNC	0x0080
+#define	TUN_NBIO	0x0100
+	struct	ifnet tun_if;		/* the interface */
+	int	tun_pgrp;		/* the process group - if any */
+#if BSD < 199103
+	struct  proc    *tun_rsel;
+	struct  proc	*tun_wsel;
+#else
+	u_char		tun_pad;	/* explicit alignment */
+	struct selinfo  tun_sel;	/* bsd select info */
+#endif
+#if NBPFILTER > 0
+	caddr_t		tun_bpf;
+#endif
+};
+
+/* Maximum packet size */
+#define	TUNMTU		1500
+
+/* ioctl's for get/set debug */
+#ifdef __NetBSD__
+#define	TUNSDEBUG	_IOW('t', 90, int)
+#define	TUNGDEBUG	_IOR('t', 89, int)
+#define	TUNSIFINFO	_IOW('t', 91, struct tuninfo)
+#define	TUNGIFINFO	_IOR('t', 92, struct tuninfo)
+#else	/* Assume BSDI */
+#define	TUNSDEBUG	_IOW('T', 90, int)
+#define	TUNGDEBUG	_IOR('T', 89, int)
+#define	TUNSIFINFO	_IOW('T', 91, struct tuninfo)
+#define	TUNGIFINFO	_IOR('T', 92, struct tuninfo)
+#endif
+
+struct tuninfo {
+	int	tif_baudrate;		/* linespeed */
+	short	tif_mtu;		/* maximum transmission unit */
+	u_char	tif_type;		/* ethernet, tokenring, etc. */
+	u_char	tif_dummy;		/* place holder */
+};
+#endif /* !_NET_IF_TUN_H_ */