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 /* if_ether.h 1.28 89/08/04 SMI; from UCB 7.2 12/7/87 */ 22 23 #include <sys/ethernet.h> 24 25 /* 26 * The following include is for compatibility with SunOS 3.x and 27 * 4.3bsd. Newly written programs should include it separately. 28 */ 29 #include <net/if_arp.h> 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 /* 36 * Ethernet Address Resolution Protocol. 37 * 38 * See RFC 826 for protocol description. Structure below is adapted 39 * to resolving internet addresses. Field names used correspond to 40 * RFC 826. 41 */ 42 struct ether_arp { 43 struct arphdr ea_hdr; /* fixed-size header */ 44 ether_addr_t arp_sha; /* sender hardware address */ 45 uchar_t arp_spa[4]; /* sender protocol address */ 46 ether_addr_t arp_tha; /* target hardware address */ 47 uchar_t arp_tpa[4]; /* target protocol address */ 48 }; 49 #define arp_hrd ea_hdr.ar_hrd 50 #define arp_pro ea_hdr.ar_pro 51 #define arp_hln ea_hdr.ar_hln 52 #define arp_pln ea_hdr.ar_pln 53 #define arp_op ea_hdr.ar_op 54 55 /* 56 * multicast address structure 57 * 58 * Keep a reference count for each multicast address so 59 * addresses loaded into chip are unique. 60 */ 61 struct mcaddr { 62 struct ether_addr mc_enaddr; /* multicast address */ 63 ushort_t mc_count; /* reference count */ 64 }; 65 #define MCADDRMAX 64 /* multicast addr table length */ 66 #define MCCOUNTMAX 4096 /* multicast addr max reference count */ 67 68 /* 69 * Structure shared between the ethernet driver modules and 70 * the address resolution code. For example, each ec_softc or il_softc 71 * begins with this structure. 72 * 73 * The structure contains a pointer to an array of multicast addresses. 74 * This pointer is NULL until the first successful SIOCADDMULTI ioctl 75 * is issued for the interface. 76 */ 77 struct arpcom { 78 struct ifnet ac_if; /* network-visible interface */ 79 struct ether_addr ac_enaddr; /* ethernet hardware address */ 80 struct in_addr ac_ipaddr; /* copy of ip address- XXX */ 81 struct mcaddr *ac_mcaddr; /* table of multicast addrs */ 82 ushort_t ac_nmcaddr; /* count of M/C addrs in use */ 83 struct in_addr ac_lastip; /* cache of last ARP lookup */ 84 struct ether_addr ac_lastarp; /* result of the last ARP */ 85 }; 86 87 /* 88 * Internet to ethernet address resolution table. 89 */ 90 struct arptab { 91 struct in_addr at_iaddr; /* internet address */ 92 union { 93 struct ether_addr atu_enaddr; /* ethernet address */ 94 long atu_tvsec; /* timestamp if incomplete */ 95 } at_union; 96 uchar_t at_timer; /* minutes since last reference */ 97 uchar_t at_flags; /* flags */ 98 struct mbuf *at_hold; /* last packet until resolved/timeout */ 99 }; 100 101 #define at_enaddr at_union.atu_enaddr 102 #define at_tvsec at_union.atu_tvsec 103 104 /* 105 * Copy IP addresses from a to b - assumes that the two given 106 * pointers can be referenced as shorts. On architectures 107 * where this is not the case, use bcopy instead. 108 */ 109 #if defined(__sparc) || defined(__i386) || defined(__amd64) 110 #define ip_copy(a, b) { ((short *)b)[0] = ((short *)a)[0]; \ 111 ((short *)b)[1] = ((short *)a)[1]; } 112 #else 113 #define ip_copy(a, b) (bcopy((caddr_t)a, (caddr_t)b, 4)) 114 #endif 115 116 #ifdef __cplusplus 117 } 118 #endif 119 120 #endif /* _NETINET_IF_ETHER_H */ 121