1 /* 2 * Copyright 1997-2003 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * Copyright (c) 1986 Regents of the University of California. 8 * All rights reserved. The Berkeley software License Agreement 9 * specifies the terms and conditions for redistribution. 10 */ 11 12 #ifndef _NET_IF_ARP_H 13 #define _NET_IF_ARP_H 14 15 #pragma ident "%Z%%M% %I% %E% SMI" 16 /* if_arp.h 1.5 88/08/19 SMI; from UCB 7.1 1/24/86 */ 17 18 #ifdef __cplusplus 19 extern "C" { 20 #endif 21 22 /* 23 * Address Resolution Protocol. 24 * 25 * See RFC 826 for protocol description. ARP packets are variable 26 * in size; the arphdr structure defines the fixed-length portion. 27 * Protocol type values are the same as those for 10 Mb/s Ethernet. 28 * It is followed by the variable-sized fields ar_sha, arp_spa, 29 * arp_tha and arp_tpa in that order, according to the lengths 30 * specified. Field names used correspond to RFC 826. 31 */ 32 struct arphdr { 33 ushort_t ar_hrd; /* format of hardware address */ 34 #define ARPHRD_ETHER 1 /* ethernet hardware address */ 35 #define ARPHRD_IB 32 /* IPoIB hardware address */ 36 ushort_t ar_pro; /* format of protocol address */ 37 uchar_t ar_hln; /* length of hardware address */ 38 uchar_t ar_pln; /* length of protocol address */ 39 ushort_t ar_op; /* one of: */ 40 #define ARPOP_REQUEST 1 /* request to resolve address */ 41 #define ARPOP_REPLY 2 /* response to previous request */ 42 #define REVARP_REQUEST 3 /* Reverse ARP request */ 43 #define REVARP_REPLY 4 /* Reverse ARP reply */ 44 /* 45 * The remaining fields are variable in size, 46 * according to the sizes above, and are defined 47 * as appropriate for specific hardware/protocol 48 * combinations. (E.g., see <netinet/if_ether.h>.) 49 */ 50 #ifdef notdef 51 uchar_t ar_sha[]; /* sender hardware address */ 52 uchar_t ar_spa[]; /* sender protocol address */ 53 uchar_t ar_tha[]; /* target hardware address */ 54 uchar_t ar_tpa[]; /* target protocol address */ 55 #endif /* notdef */ 56 }; 57 58 /* 59 * Extended ARP ioctl request 60 */ 61 struct xarpreq { 62 struct sockaddr_storage xarp_pa; /* protocol address */ 63 struct sockaddr_dl xarp_ha; /* hardware address */ 64 int xarp_flags; /* flags */ 65 }; 66 67 /* 68 * BSD ARP ioctl request 69 */ 70 struct arpreq { 71 struct sockaddr arp_pa; /* protocol address */ 72 struct sockaddr arp_ha; /* hardware address */ 73 int arp_flags; /* flags */ 74 }; 75 /* arp_flags and at_flags field values */ 76 #define ATF_INUSE 0x01 /* entry in use */ 77 #define ATF_COM 0x02 /* completed entry (enaddr valid) */ 78 #define ATF_PERM 0x04 /* permanent entry */ 79 #define ATF_PUBL 0x08 /* publish entry (respond for other host) */ 80 #define ATF_USETRAILERS 0x10 /* has requested trailers */ 81 82 /* 83 * This data structure is used by kernel protocol modules to register 84 * their interest in a particular packet type with the Ethernet drivers. 85 * For example, other kinds of ARP would use this, XNS, ApleTalk, etc. 86 */ 87 struct ether_family { 88 int ef_family; /* address family */ 89 ushort_t ef_ethertype; /* ethernet type field */ 90 struct ifqueue *(*ef_infunc)(); /* input function */ 91 int (*ef_outfunc)(); /* output function */ 92 int (*ef_netisr)(); /* soft interrupt function */ 93 struct ether_family *ef_next; /* link to next on list */ 94 }; 95 96 #ifdef __cplusplus 97 } 98 #endif 99 100 #endif /* _NET_IF_ARP_H */ 101