1 files changed, 78 insertions, 0 deletions

diff --git a/sys/net/if_mib.h b/sys/net/if_mib.h
new file mode 100644
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+++ b/sys/net/if_mib.h
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+/*
+ * Copyright 1996 Massachusetts Institute of Technology
+ *
+ * Permission to use, copy, modify, and distribute this software and
+ * its documentation for any purpose and without fee is hereby
+ * granted, provided that both the above copyright notice and this
+ * permission notice appear in all copies, that both the above
+ * copyright notice and this permission notice appear in all
+ * supporting documentation, and that the name of M.I.T. not be used
+ * in advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.  M.I.T. makes
+ * no representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied
+ * warranty.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS
+ * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
+ * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#ifndef _NET_IF_MIB_H
+#define	_NET_IF_MIB_H	1
+
+struct ifmibdata {
+	char	ifmd_name[IFNAMSIZ]; /* name of interface */
+	int	ifmd_pcount;	/* number of promiscuous listeners */
+	int	ifmd_flags;	/* interface flags */
+	struct	if_data ifmd_data; /* generic information and statistics */
+	int	ifmd_snd_len;	/* instantaneous length of send queue */
+	int	ifmd_snd_maxlen; /* maximum length of send queue */
+	int	ifmd_snd_drops;	/* number of drops in send queue */
+};
+
+/*
+ * sysctl MIB tags at the net.link.generic level
+ */
+#define	IFMIB_SYSTEM	1	/* non-interface-specific */
+#define	IFMIB_IFDATA	2	/* per-interface data table */
+
+/*
+ * MIB tags for the various net.link.generic.ifdata tables
+ */
+#define	IFDATA_GENERAL	1	/* generic stats for all kinds of ifaces */
+#define	IFDATA_LINKSPECIFIC	2 /* specific to the type of interface */
+
+/*
+ * MIB tags at the net.link.generic.system level
+ */
+#define	IFMIB_IFCOUNT	1	/* number of interfaces configured */
+
+/*
+ * MIB tags as the net.link level
+ * All of the other values are IFT_* names defined in if_types.h.
+ */
+#define	NETLINK_GENERIC	0	/* functions not specific to a type of iface */
+
+/*
+ * The reason why the IFDATA_LINKSPECIFIC stuff is not under the
+ * net.link.<iftype> branches is twofold:
+ *   1) It's easier to code this way, and doesn't require duplication.
+ *   2) The fourth level under net.link.<iftype> is <pf>; that is to say,
+ *	the net.link.<iftype> tree instruments the adaptation layers between
+ *	<iftype> and a particular protocol family (e.g., net.link.ether.inet
+ *	instruments ARP).  This does not really leave room for anything else
+ *	that needs to have a well-known number.
+ */
+#endif /* _NET_IF_MIB_H */