- /*
- * 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/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
- {
- uint8_t proto; /* protocol ID field - varies */
- uint8_t split_flag; /* for use with split packets */
- uint16_t sequence; /* sequence number */
- uint8_t payload[0]; /* space remaining in packet (504 bytes)*/
- };
- #define RFC1201_HDR_SIZE 4
- /*
- * The RFC1051-specific components.
- */
- struct arc_rfc1051
- {
- uint8_t proto; /* ARC_P_RFC1051_ARP/RFC1051_IP */
- uint8_t 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
- {
- uint8_t proto; /* Always ARC_P_ETHER */
- struct ethhdr eth; /* standard ethernet header (yuck!) */
- uint8_t payload[0]; /* 493 bytes */
- };
- #define ETH_ENCAP_HDR_SIZE 14
- struct arc_cap
- {
- uint8_t proto;
- uint8_t cookie[sizeof(int)]; /* Actually NOT sent over the network */
- union {
- uint8_t ack;
- uint8_t 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
- {
- uint8_t 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;
- uint8_t raw[0]; /* 508 bytes */
- } soft;
- };
- #endif /* _LINUX_IF_ARCNET_H */