1 /* 2 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * Copyright (c) 1982, 1986 Regents of the University of California. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms are permitted 11 * provided that this notice is preserved and that due credit is given 12 * to the University of California at Berkeley. The name of the University 13 * may not be used to endorse or promote products derived from this 14 * software without specific prior written permission. This software 15 * is provided ``as is'' without express or implied warranty. 16 */ 17 18 #ifndef _NETINET_IF_ETHER_H 19 #define _NETINET_IF_ETHER_H 20 21 #pragma ident "%Z%%M% %I% %E% SMI" 22 /* if_ether.h 1.28 89/08/04 SMI; from UCB 7.2 12/7/87 */ 23 24 #include <sys/ethernet.h> 25 26 /* 27 * The following include is for compatibility with SunOS 3.x and 28 * 4.3bsd. Newly written programs should include it separately. 29 */ 30 #include <net/if_arp.h> 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* 37 * Ethernet Address Resolution Protocol. 38 * 39 * See RFC 826 for protocol description. Structure below is adapted 40 * to resolving internet addresses. Field names used correspond to 41 * RFC 826. 42 */ 43 struct ether_arp { 44 struct arphdr ea_hdr; /* fixed-size header */ 45 ether_addr_t arp_sha; /* sender hardware address */ 46 uchar_t arp_spa[4]; /* sender protocol address */ 47 ether_addr_t arp_tha; /* target hardware address */ 48 uchar_t arp_tpa[4]; /* target protocol address */ 49 }; 50 #define arp_hrd ea_hdr.ar_hrd 51 #define arp_pro ea_hdr.ar_pro 52 #define arp_hln ea_hdr.ar_hln 53 #define arp_pln ea_hdr.ar_pln 54 #define arp_op ea_hdr.ar_op 55 56 /* 57 * multicast address structure 58 * 59 * Keep a reference count for each multicast address so 60 * addresses loaded into chip are unique. 61 */ 62 struct mcaddr { 63 struct ether_addr mc_enaddr; /* multicast address */ 64 ushort_t mc_count; /* reference count */ 65 }; 66 #define MCADDRMAX 64 /* multicast addr table length */ 67 #define MCCOUNTMAX 4096 /* multicast addr max reference count */ 68 69 /* 70 * Structure shared between the ethernet driver modules and 71 * the address resolution code. For example, each ec_softc or il_softc 72 * begins with this structure. 73 * 74 * The structure contains a pointer to an array of multicast addresses. 75 * This pointer is NULL until the first successful SIOCADDMULTI ioctl 76 * is issued for the interface. 77 */ 78 struct arpcom { 79 struct ifnet ac_if; /* network-visible interface */ 80 struct ether_addr ac_enaddr; /* ethernet hardware address */ 81 struct in_addr ac_ipaddr; /* copy of ip address- XXX */ 82 struct mcaddr *ac_mcaddr; /* table of multicast addrs */ 83 ushort_t ac_nmcaddr; /* count of M/C addrs in use */ 84 struct in_addr ac_lastip; /* cache of last ARP lookup */ 85 struct ether_addr ac_lastarp; /* result of the last ARP */ 86 }; 87 88 /* 89 * Internet to ethernet address resolution table. 90 */ 91 struct arptab { 92 struct in_addr at_iaddr; /* internet address */ 93 union { 94 struct ether_addr atu_enaddr; /* ethernet address */ 95 long atu_tvsec; /* timestamp if incomplete */ 96 } at_union; 97 uchar_t at_timer; /* minutes since last reference */ 98 uchar_t at_flags; /* flags */ 99 struct mbuf *at_hold; /* last packet until resolved/timeout */ 100 }; 101 102 #define at_enaddr at_union.atu_enaddr 103 #define at_tvsec at_union.atu_tvsec 104 105 /* 106 * Copy IP addresses from a to b - assumes that the two given 107 * pointers can be referenced as shorts. On architectures 108 * where this is not the case, use bcopy instead. 109 */ 110 #if defined(__sparc) || defined(__i386) || defined(__amd64) 111 #define ip_copy(a, b) { ((short *)b)[0] = ((short *)a)[0]; \ 112 ((short *)b)[1] = ((short *)a)[1]; } 113 #else 114 #define ip_copy(a, b) (bcopy((caddr_t)a, (caddr_t)b, 4)) 115 #endif 116 117 #ifdef __cplusplus 118 } 119 #endif 120 121 #endif /* _NETINET_IF_ETHER_H */ 122