/* * 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 */