World, I'd like you to meet the first FreeBSD token Ring driver.

This  is for various Olicom cards. An IBM driver is following.
This patch also adds support to tcpdump to decode packets on tokenring.
Congratulations to the proud father.. (below)

Submitted by:	Larry Lile <lile@stdio.com>

1 files changed, 105 insertions, 0 deletions

diff --git a/sys/net/iso88025.h b/sys/net/iso88025.h
new file mode 100644
index 0000000..ba08c33
--- /dev/null
+++ b/sys/net/iso88025.h
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 1998, Larry Lile
+ * All rights reserved.
+ *
+ * For latest sources and information on this driver, please
+ * go to http://anarchy.stdio.com.
+ *
+ * Questions, comments or suggestions should be directed to
+ * Larry Lile <lile@stdio.com>.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 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: iso88025.h,v 1.10 1999/01/09 19:01:58 lile Exp $
+ *
+ * Information gathered from tokenring@freebsd, /sys/net/ethernet.h and
+ * the Mach token ring driver.
+ */
+
+/*
+ * Fundamental constants relating to iso 802.5
+ */
+
+#ifndef _NET_ISO88025_H_
+#define _NET_ISO88025_H_
+
+/*
+ * The number of bytes in an iso 802.5 (MAC) address.
+ */
+#define	ISO88025_ADDR_LEN	6
+
+/*
+ */
+#define ISO88025_HDR_LEN        (ISO88025_CF_LEN + ISO88025_ADDR_LEN*2)
+#define ISO88025_CF_LEN         2
+#define RCF_LEN                 2
+#define RIF_LEN                 16
+
+
+/*
+ * The minimum packet length.
+ */
+#define	ISO88025_MIN_LEN	0 /* This offends my morality */
+
+/*
+ * The maximum packet length.
+ */
+#define	ISO88025_MAX_LEN	17960	
+
+/*
+ * A macro to validate a length with
+ */
+#define	ISO88025_IS_VALID_LEN(foo)	\
+	((foo) >= ISO88025_MIN_LEN && (foo) <= ISO88025_MAX_LEN)
+
+/*
+ * ISO 802.5 physical header 
+ */
+struct iso88025_header {
+        u_char   ac;                                    /* access control field */
+        u_char   fc;                                    /* frame control field */
+        u_char   iso88025_dhost[ISO88025_ADDR_LEN];     /* destination address */
+        u_char   iso88025_shost[ISO88025_ADDR_LEN];     /* source address */
+        u_short  rcf;                                   /* route control field */
+        u_short  rseg[RIF_LEN];                         /* routing registers */
+};
+
+/*
+ * Structure of a 48-bit iso 802.5 address.
+ *  ( We could also add the 16 bit addresses as a union)
+ */
+struct	iso88025_addr {
+	u_char octet[ISO88025_ADDR_LEN];
+};
+
+#define ISO88025MTU     18000
+#define ISO88025_DEFAULT_MTU     1500
+#define senderr(e) { error = (e); goto bad;}
+
+void   iso88025_ifattach __P((struct ifnet *));
+int    iso88025_ioctl __P((struct ifnet *, int , caddr_t ));
+int    iso88025_output __P((struct ifnet *, struct mbuf *, struct sockaddr *, struct rtentry *));
+void   iso88025_input __P((struct ifnet *, struct iso88025_header *, struct mbuf *));
+
+
+#endif