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Edit File : if_arcnet.h \| Size : 3.63 KB
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note / / * 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 / __u8 dest; / destination ARCnet - 0 for broadcast / __u8 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 */ Back

Edit File : if_arcnet.h | Size : 3.63 KB

/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
 * 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 */
	__u8 dest;		/* destination ARCnet - 0 for broadcast    */
	__u8 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 */

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