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- /*
- * Copyright (c) 1982, 1986 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- *
- * @(#)if_ether.h 1.20 88/02/08 SMI; from UCB 7.1 6/5/86
- */
-
- #ifndef _IF_ETHER_
- #define _IF_ETHER_
-
- /*
- * The following include is for compatibility with SunOS 3.x and
- * 4.3bsd. Newly written programs should include it separately.
- */
- #include "if_arp.h"
-
- /*
- * Ethernet address - 6 octets
- */
- struct ether_addr {
- u_char ether_addr_octet[6];
- };
-
- /*
- * Structure of a 10Mb/s Ethernet header.
- */
- struct ether_header {
- struct ether_addr ether_dhost;
- struct ether_addr ether_shost;
- u_short ether_type;
- };
-
- #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 */
-
- /*
- * 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 ETHERMTU 1500
- #define ETHERMIN (60-14)
-
- /*
- * Ethernet Address Resolution Protocol.
- *
- * See RFC 826 for protocol description. Structure below is adapted
- * to resolving internet addresses. Field names used correspond to
- * RFC 826.
- */
- struct ether_arp {
- struct arphdr ea_hdr; /* fixed-size header */
- struct ether_addr arp_sha; /* sender hardware address */
- u_char arp_spa[4]; /* sender protocol address */
- struct ether_addr arp_tha; /* target hardware address */
- u_char arp_tpa[4]; /* target protocol address */
- };
- #define arp_hrd ea_hdr.ar_hrd
- #define arp_pro ea_hdr.ar_pro
- #define arp_hln ea_hdr.ar_hln
- #define arp_pln ea_hdr.ar_pln
- #define arp_op ea_hdr.ar_op
-
- /*
- * Structure shared between the ethernet driver modules and
- * the address resolution code. For example, each ec_softc or il_softc
- * begins with this structure.
- *
- * The structure contains a pointer to an array of multicast addresses.
- * This pointer is NULL until the first successful SIOCADDMULTI ioctl
- * is issued for the interface.
- */
- #define MCADDRMAX 64 /* multicast addr table length */
- struct arpcom {
- struct ifnet ac_if; /* network-visible interface */
- struct ether_addr ac_enaddr; /* ethernet hardware address */
- struct in_addr ac_ipaddr; /* copy of ip address- XXX */
- struct ether_addr *ac_mcaddr; /* table of multicast addrs */
- u_short ac_nmcaddr; /* count of M/C addrs in use */
- };
-
- /*
- * Internet to ethernet address resolution table.
- */
- struct arptab {
- struct in_addr at_iaddr; /* internet address */
- struct ether_addr at_enaddr; /* ethernet address */
- u_char at_timer; /* minutes since last reference */
- u_char at_flags; /* flags */
- struct mbuf *at_hold; /* last packet until resolved/timeout */
- };
-
- /*
- * Compare two Ethernet addresses - assumes that the two given
- * pointers can be referenced as shorts. On architectures
- * where this is not the case, use bcmp instead. Note that like
- * bcmp, we return zero if they are the SAME.
- */
- #if defined(sun2) || defined(sun3)
- /*
- * On 680x0 machines, we can do a longword compare that is NOT
- * longword aligned, as long as it is even aligned.
- */
- #define ether_cmp(a,b) ( ((short *)a)[2] != ((short *)b)[2] || \
- *((long *)a) != *((long *)b) )
- #endif
-
- /*
- * On a sparc, functions are FAST
- */
- #if defined(sparc)
- #define ether_cmp(a,b) (sparc_ether_cmp((short *)a, (short *)b))
- #endif
-
- #ifndef ether_cmp
- #define ether_cmp(a,b) (bcmp((caddr_t)a,(caddr_t)b, 6))
- #endif
-
- /*
- * Copy Ethernet addresses from a to b - assumes that the two given
- * pointers can be referenced as shorts. On architectures
- * where this is not the case, use bcopy instead.
- */
- #if defined(sun2) || defined(sun3)
- #define ether_copy(a,b) { ((long *)b)[0]=((long *)a)[0]; \
- ((short *)b)[2]=((short *)a)[2]; }
- #endif
-
- #if defined(sparc)
- #define ether_copy(a,b) { ((short *)b)[0]=((short *)a)[0]; \
- ((short *)b)[1]=((short *)a)[1]; ((short *)b)[2]=((short *)a)[2]; }
- #endif
-
- #ifndef ether_copy
- #define ether_copy(a,b) (bccopy((caddr_t)a,(caddr_t)b, 6))
- #endif
-
- /*
- * Copy IP addresses from a to b - assumes that the two given
- * pointers can be referenced as shorts. On architectures
- * where this is not the case, use bcopy instead.
- */
- #if defined(sun2) || defined(sun3)
- #define ip_copy(a,b) { *((long *)b) = *((long *)a); }
- #endif
-
- #if defined(sparc)
- #define ip_copy(a,b) { ((short *)b)[0]=((short *)a)[0]; \
- ((short *)b)[1]=((short *)a)[1]; }
- #endif
-
- #ifndef ip_copy
- #define ip_copy(a,b) (bccopy((caddr_t)a,(caddr_t)b, 4))
- #endif
-
- #ifdef KERNEL
- struct ether_addr etherbroadcastaddr;
- struct arptab *arptnew();
- char *ether_sprintf();
- #endif KERNEL
-
- #endif _IF_ETHER_
-