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/*
* Mach Operating System
* Copyright (c) 1987 Carnegie-Mellon University
* All rights reserved. The CMU software License Agreement specifies
* the terms and conditions for use and redistribution.
*/
/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that this notice is preserved and that due credit is given
* to the University of California at Berkeley. The name of the University
* may not be used to endorse or promote products derived from this
* software without specific prior written permission. This software
* is provided ``as is'' without express or implied warranty.
*
* HISTORY
* 11-Jul-93 Mac Gillon (mgillon) at NeXT
* Integrated MULTICAST support
*
* 09-Apr-90 Bradley Taylor (btaylor) at NeXT, Inc.
* Created. Originally part of <netinet/if_ether.h>.
*/
#ifndef _ETHERDEFS_
#define _ETHERDEFS_
/*
* Ethernet address - 6 octets
*/
#define NUM_EN_ADDR_BYTES 6
struct ether_addr {
u_char ether_addr_octet[NUM_EN_ADDR_BYTES];
};
#define ea_byte ether_addr_octet
typedef struct ether_addr enet_addr_t;
/*
* Structure of a 10Mb/s Ethernet header.
*/
struct ether_header {
u_char ether_dhost[6];
u_char ether_shost[6];
u_short ether_type;
};
typedef struct ether_header ether_header_t;
#define IFTYPE_ETHERNET "10MB Ethernet"
#define ETHERTYPE_PUP 0x0200 /* PUP protocol */
#define ETHERTYPE_IP 0x0800 /* IP protocol */
#define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */
#define ETHERTYPE_REVARP 0x8035 /* Reverse ARP (SUN_RPC) */
/*
* The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
* (type-ETHERTYPE_TRAIL)*512 bytes of data followed
* by an ETHER type (as given above) and then the (variable-length) header.
*/
#define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */
#define ETHERTYPE_NTRAILER 16
#define ETHERHDRSIZE 14
#define ETHERMTU 1500
#define ETHERMAXPACKET (ETHERHDRSIZE + ETHERMTU)
#define ETHERMINPACKET 64
#define ETHERCRC 4
#define ETHERMIN (ETHERMINPACKET-ETHERCRC-ETHERHDRSIZE)
/*
* Byte and bit in an enet_addr_t defining individual/group destination.
*/
#define EA_GROUP_BYTE 0
#define EA_GROUP_BIT 0x01
#ifdef KERNEL
/*
* Macro to map an IP multicast address to an Ethernet multicast address.
* The high-order 25 bits of the Ethernet address are statically assigned,
* and the low-order 23 bits are taken from the low end of the IP address.
*/
#define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \
/* struct in_addr *ipaddr; */ \
/* u_char enaddr[6]; */ \
{ \
(enaddr)[0] = 0x01; \
(enaddr)[1] = 0x00; \
(enaddr)[2] = 0x5e; \
(enaddr)[3] = ((u_char *)ipaddr)[1] & 0x7f; \
(enaddr)[4] = ((u_char *)ipaddr)[2]; \
(enaddr)[5] = ((u_char *)ipaddr)[3]; \
}
#endif
#endif /* _ETHERDEFS_ */
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.