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130 lines
3.6 KiB
130 lines
3.6 KiB
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
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/* |
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* INET An implementation of the TCP/IP protocol suite for the LINUX |
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* operating system. INET is implemented using the BSD Socket |
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* interface as the means of communication with the user level. |
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* |
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* Global definitions for the ARCnet interface. |
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* |
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* Authors: David Woodhouse and Avery Pennarun |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version |
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* 2 of the License, or (at your option) any later version. |
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*/ |
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#ifndef _LINUX_IF_ARCNET_H |
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#define _LINUX_IF_ARCNET_H |
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#include <linux/types.h> |
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#include <linux/if_ether.h> |
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/* |
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* These are the defined ARCnet Protocol ID's. |
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*/ |
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/* CAP mode */ |
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/* No macro but uses 1-8 */ |
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/* RFC1201 Protocol ID's */ |
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#define ARC_P_IP 212 /* 0xD4 */ |
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#define ARC_P_IPV6 196 /* 0xC4: RFC2497 */ |
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#define ARC_P_ARP 213 /* 0xD5 */ |
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#define ARC_P_RARP 214 /* 0xD6 */ |
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#define ARC_P_IPX 250 /* 0xFA */ |
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#define ARC_P_NOVELL_EC 236 /* 0xEC */ |
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/* Old RFC1051 Protocol ID's */ |
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#define ARC_P_IP_RFC1051 240 /* 0xF0 */ |
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#define ARC_P_ARP_RFC1051 241 /* 0xF1 */ |
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/* MS LanMan/WfWg "NDIS" encapsulation */ |
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#define ARC_P_ETHER 232 /* 0xE8 */ |
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/* Unsupported/indirectly supported protocols */ |
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#define ARC_P_DATAPOINT_BOOT 0 /* very old Datapoint equipment */ |
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#define ARC_P_DATAPOINT_MOUNT 1 |
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#define ARC_P_POWERLAN_BEACON 8 /* Probably ATA-Netbios related */ |
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#define ARC_P_POWERLAN_BEACON2 243 /* 0xF3 */ |
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#define ARC_P_LANSOFT 251 /* 0xFB - what is this? */ |
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#define ARC_P_ATALK 0xDD |
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/* Hardware address length */ |
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#define ARCNET_ALEN 1 |
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/* |
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* The RFC1201-specific components of an arcnet packet header. |
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*/ |
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struct arc_rfc1201 { |
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__u8 proto; /* protocol ID field - varies */ |
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__u8 split_flag; /* for use with split packets */ |
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__be16 sequence; /* sequence number */ |
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__u8 payload[0]; /* space remaining in packet (504 bytes)*/ |
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}; |
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#define RFC1201_HDR_SIZE 4 |
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/* |
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* The RFC1051-specific components. |
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*/ |
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struct arc_rfc1051 { |
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__u8 proto; /* ARC_P_RFC1051_ARP/RFC1051_IP */ |
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__u8 payload[0]; /* 507 bytes */ |
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}; |
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#define RFC1051_HDR_SIZE 1 |
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/* |
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* The ethernet-encap-specific components. We have a real ethernet header |
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* and some data. |
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*/ |
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struct arc_eth_encap { |
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__u8 proto; /* Always ARC_P_ETHER */ |
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struct ethhdr eth; /* standard ethernet header (yuck!) */ |
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__u8 payload[0]; /* 493 bytes */ |
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}; |
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#define ETH_ENCAP_HDR_SIZE 14 |
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struct arc_cap { |
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__u8 proto; |
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__u8 cookie[sizeof(int)]; |
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/* Actually NOT sent over the network */ |
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union { |
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__u8 ack; |
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__u8 raw[0]; /* 507 bytes */ |
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} mes; |
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}; |
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/* |
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* The data needed by the actual arcnet hardware. |
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* |
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* Now, in the real arcnet hardware, the third and fourth bytes are the |
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* 'offset' specification instead of the length, and the soft data is at |
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* the _end_ of the 512-byte buffer. We hide this complexity inside the |
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* driver. |
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*/ |
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struct arc_hardware { |
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__u8 source; /* source ARCnet - filled in automagically */ |
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__u8 dest; /* destination ARCnet - 0 for broadcast */ |
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__u8 offset[2]; /* offset bytes (some weird semantics) */ |
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}; |
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#define ARC_HDR_SIZE 4 |
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/* |
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* This is an ARCnet frame header, as seen by the kernel (and userspace, |
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* when you do a raw packet capture). |
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*/ |
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struct archdr { |
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/* hardware requirements */ |
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struct arc_hardware hard; |
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/* arcnet encapsulation-specific bits */ |
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union { |
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struct arc_rfc1201 rfc1201; |
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struct arc_rfc1051 rfc1051; |
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struct arc_eth_encap eth_encap; |
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struct arc_cap cap; |
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__u8 raw[0]; /* 508 bytes */ |
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} soft; |
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}; |
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#endif /* _LINUX_IF_ARCNET_H */
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