[linux-2.6-block.git] / include / linux / if_arcnet.h

/*
 * INET         An implementation of the TCP/IP protocol suite for the LINUX
 *              operating system.  INET is implemented using the  BSD Socket
 *              interface as the means of communication with the user level.
 *
 *              Global definitions for the ARCnet interface.
 *
 * Authors:     David Woodhouse and Avery Pennarun
 *
 *              This program is free software; you can redistribute it and/or
 *              modify it under the terms of the GNU General Public License
 *              as published by the Free Software Foundation; either version
 *              2 of the License, or (at your option) any later version.
 */

#ifndef _LINUX_IF_ARCNET_H
#define _LINUX_IF_ARCNET_H

#include <linux/types.h>
#include <linux/if_ether.h>


/*
 *    These are the defined ARCnet Protocol ID's.
 */

/* CAP mode */
/* No macro but uses 1-8 */

/* RFC1201 Protocol ID's */
#define ARC_P_IP		212	/* 0xD4 */
#define ARC_P_IPV6		196	/* 0xC4: RFC2497 */
#define ARC_P_ARP		213	/* 0xD5 */
#define ARC_P_RARP		214	/* 0xD6 */
#define ARC_P_IPX		250	/* 0xFA */
#define ARC_P_NOVELL_EC		236	/* 0xEC */

/* Old RFC1051 Protocol ID's */
#define ARC_P_IP_RFC1051	240	/* 0xF0 */
#define ARC_P_ARP_RFC1051	241	/* 0xF1 */

/* MS LanMan/WfWg "NDIS" encapsulation */
#define ARC_P_ETHER		232	/* 0xE8 */

/* Unsupported/indirectly supported protocols */
#define ARC_P_DATAPOINT_BOOT	0	/* very old Datapoint equipment */
#define ARC_P_DATAPOINT_MOUNT	1
#define ARC_P_POWERLAN_BEACON	8	/* Probably ATA-Netbios related */
#define ARC_P_POWERLAN_BEACON2	243	/* 0xF3 */
#define ARC_P_LANSOFT		251	/* 0xFB - what is this? */
#define ARC_P_ATALK		0xDD

/* Hardware address length */
#define ARCNET_ALEN	1

/*
 * The RFC1201-specific components of an arcnet packet header.
 */
struct arc_rfc1201
{
    __u8  proto;		/* protocol ID field - varies		*/
    __u8  split_flag;	/* for use with split packets		*/
    __be16   sequence;		/* sequence number			*/
    __u8  payload[0];	/* space remaining in packet (504 bytes)*/
};
#define RFC1201_HDR_SIZE 4


/*
 * The RFC1051-specific components.
 */
struct arc_rfc1051
{
    __u8 proto;		/* ARC_P_RFC1051_ARP/RFC1051_IP	*/
    __u8 payload[0];		/* 507 bytes			*/
};
#define RFC1051_HDR_SIZE 1


/*
 * The ethernet-encap-specific components.  We have a real ethernet header
 * and some data.
 */
struct arc_eth_encap
{
    __u8 proto;		/* Always ARC_P_ETHER			*/
    struct ethhdr eth;		/* standard ethernet header (yuck!)	*/
    __u8 payload[0];		/* 493 bytes				*/
};
#define ETH_ENCAP_HDR_SIZE 14


struct arc_cap
{
	__u8 proto;
	__u8 cookie[sizeof(int)];   /* Actually NOT sent over the network */
	union {
		__u8 ack;
		__u8 raw[0];		/* 507 bytes */
	} mes;
};

/*
 * The data needed by the actual arcnet hardware.
 *
 * Now, in the real arcnet hardware, the third and fourth bytes are the
 * 'offset' specification instead of the length, and the soft data is at
 * the _end_ of the 512-byte buffer.  We hide this complexity inside the
 * driver.
 */
struct arc_hardware
{
    __u8  source,		/* source ARCnet - filled in automagically */
             dest,		/* destination ARCnet - 0 for broadcast    */
    	     offset[2];		/* offset bytes (some weird semantics)     */
};
#define ARC_HDR_SIZE 4

/*
 * This is an ARCnet frame header, as seen by the kernel (and userspace,
 * when you do a raw packet capture).
 */
struct archdr
{
    /* hardware requirements */
    struct arc_hardware hard;
     
    /* arcnet encapsulation-specific bits */
    union {
	struct arc_rfc1201   rfc1201;
	struct arc_rfc1051   rfc1051;
	struct arc_eth_encap eth_encap;
	struct arc_cap       cap;
	__u8 raw[0];		/* 508 bytes				*/
    } soft;
};

#endif				/* _LINUX_IF_ARCNET_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* INET An implementation of the TCP/IP protocol suite for the LINUX
	3	* operating system. INET is implemented using the BSD Socket
	4	* interface as the means of communication with the user level.
	5	*
	6	* Global definitions for the ARCnet interface.
	7	*
	8	* Authors: David Woodhouse and Avery Pennarun
	9	*
	10	* This program is free software; you can redistribute it and/or
	11	* modify it under the terms of the GNU General Public License
	12	* as published by the Free Software Foundation; either version
	13	* 2 of the License, or (at your option) any later version.
	14	*/
	15
	16	#ifndef _LINUX_IF_ARCNET_H
	17	#define _LINUX_IF_ARCNET_H
	18
9adfbfb6	19	#include <linux/types.h>
1da177e4 LT	20	#include <linux/if_ether.h>
	21
	22
	23	/*
	24	* These are the defined ARCnet Protocol ID's.
	25	*/
	26
	27	/* CAP mode */
	28	/* No macro but uses 1-8 */
	29
	30	/* RFC1201 Protocol ID's */
	31	#define ARC_P_IP 212 /* 0xD4 */
	32	#define ARC_P_IPV6 196 /* 0xC4: RFC2497 */
	33	#define ARC_P_ARP 213 /* 0xD5 */
	34	#define ARC_P_RARP 214 /* 0xD6 */
	35	#define ARC_P_IPX 250 /* 0xFA */
	36	#define ARC_P_NOVELL_EC 236 /* 0xEC */
	37
	38	/* Old RFC1051 Protocol ID's */
	39	#define ARC_P_IP_RFC1051 240 /* 0xF0 */
	40	#define ARC_P_ARP_RFC1051 241 /* 0xF1 */
	41
	42	/* MS LanMan/WfWg "NDIS" encapsulation */
	43	#define ARC_P_ETHER 232 /* 0xE8 */
	44
	45	/* Unsupported/indirectly supported protocols */
	46	#define ARC_P_DATAPOINT_BOOT 0 /* very old Datapoint equipment */
	47	#define ARC_P_DATAPOINT_MOUNT 1
	48	#define ARC_P_POWERLAN_BEACON 8 /* Probably ATA-Netbios related */
	49	#define ARC_P_POWERLAN_BEACON2 243 /* 0xF3 */
	50	#define ARC_P_LANSOFT 251 /* 0xFB - what is this? */
	51	#define ARC_P_ATALK 0xDD
	52
	53	/* Hardware address length */
	54	#define ARCNET_ALEN 1
	55
	56	/*
	57	* The RFC1201-specific components of an arcnet packet header.
	58	*/
	59	struct arc_rfc1201
	60	{
9adfbfb6 AB	61	__u8 proto; /* protocol ID field - varies */
9adfbfb6 AB	62	__u8 split_flag; /* for use with split packets */
701181ac	63	__be16 sequence; /* sequence number */
9adfbfb6	64	__u8 payload[0]; /* space remaining in packet (504 bytes)*/
1da177e4 LT	65	};
	66	#define RFC1201_HDR_SIZE 4
	67
	68
	69	/*
	70	* The RFC1051-specific components.
	71	*/
	72	struct arc_rfc1051
	73	{
9adfbfb6 AB	74	__u8 proto; /* ARC_P_RFC1051_ARP/RFC1051_IP */
9adfbfb6 AB	75	__u8 payload[0]; /* 507 bytes */
1da177e4 LT	76	};
	77	#define RFC1051_HDR_SIZE 1
	78
	79
	80	/*
	81	* The ethernet-encap-specific components. We have a real ethernet header
	82	* and some data.
	83	*/
	84	struct arc_eth_encap
	85	{
9adfbfb6	86	__u8 proto; /* Always ARC_P_ETHER */
1da177e4	87	struct ethhdr eth; /* standard ethernet header (yuck!) */
9adfbfb6	88	__u8 payload[0]; /* 493 bytes */
1da177e4 LT	89	};
	90	#define ETH_ENCAP_HDR_SIZE 14
	91
	92
	93	struct arc_cap
	94	{
9adfbfb6 AB	95	__u8 proto;
9adfbfb6 AB	96	__u8 cookie[sizeof(int)]; /* Actually NOT sent over the network */
1da177e4	97	union {
9adfbfb6 AB	98	__u8 ack;
9adfbfb6 AB	99	__u8 raw[0]; /* 507 bytes */
1da177e4 LT	100	} mes;
	101	};
	102
	103	/*
	104	* The data needed by the actual arcnet hardware.
	105	*
	106	* Now, in the real arcnet hardware, the third and fourth bytes are the
	107	* 'offset' specification instead of the length, and the soft data is at
	108	* the _end_ of the 512-byte buffer. We hide this complexity inside the
	109	* driver.
	110	*/
	111	struct arc_hardware
	112	{
9adfbfb6	113	__u8 source, /* source ARCnet - filled in automagically */
1da177e4 LT	114	dest, /* destination ARCnet - 0 for broadcast */
	115	offset[2]; /* offset bytes (some weird semantics) */
	116	};
	117	#define ARC_HDR_SIZE 4
	118
	119	/*
	120	* This is an ARCnet frame header, as seen by the kernel (and userspace,
	121	* when you do a raw packet capture).
	122	*/
	123	struct archdr
	124	{
	125	/* hardware requirements */
	126	struct arc_hardware hard;
	127
	128	/* arcnet encapsulation-specific bits */
	129	union {
	130	struct arc_rfc1201 rfc1201;
	131	struct arc_rfc1051 rfc1051;
	132	struct arc_eth_encap eth_encap;
	133	struct arc_cap cap;
9adfbfb6	134	__u8 raw[0]; /* 508 bytes */
1da177e4 LT	135	} soft;
	136	};
	137
	138	#endif /* _LINUX_IF_ARCNET_H */