1 files changed, 49 insertions, 0 deletions
diff --git a/sys/net/if_tun.h b/sys/net/if_tun.h
new file mode 100644
index 000000000000..ccdc25944823
--- /dev/null
+++ b/sys/net/if_tun.h
@@ -0,0 +1,49 @@
+/*	$NetBSD: if_tun.h,v 1.5 1994/06/29 06:36:27 cgd 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 its 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.
+ */
+
+#ifndef _NET_IF_TUN_H_
+#define _NET_IF_TUN_H_
+
+/* Refer to if_tunvar.h for the softc stuff */
+
+/* Maximum transmit packet size (default) */
+#define	TUNMTU		1500
+
+/* Maximum receive packet size (hard limit) */
+#define	TUNMRU		65535
+
+struct tuninfo {
+	int	baudrate;		/* linespeed */
+	unsigned short	mtu;		/* maximum transmission unit */
+	u_char	type;			/* ethernet, tokenring, etc. */
+	u_char	dummy;			/* place holder */
+};
+
+/* ioctl's for get/set debug */
+#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)
+#define	TUNSLMODE	_IOW('t', 93, int)
+#define	TUNGIFNAME	_IOR('t', 93, struct ifreq)
+#define	TUNSIFMODE	_IOW('t', 94, int)
+#define	TUNSIFPID	_IO('t', 95)
+#define	TUNSIFHEAD	_IOW('t', 96, int)
+#define	TUNGIFHEAD	_IOR('t', 97, int)
+#define	TUNSTRANSIENT	_IOW('t', 98, int)
+#define	TUNGTRANSIENT	_IOR('t', 99, int)
+
+#endif /* !_NET_IF_TUN_H_ */