1 /* 2 * Copyright (c) 2000-2016 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 /* 29 * Copyright (c) 1986, 1993 30 * The Regents of the University of California. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by the University of 43 * California, Berkeley and its contributors. 44 * 4. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)if_arp.h 8.1 (Berkeley) 6/10/93 61 * $FreeBSD: src/sys/net/if_arp.h,v 1.14.2.1 2000/07/11 20:46:55 archie Exp $ 62 */ 63 64 #ifndef _NET_IF_ARP_H_ 65 #define _NET_IF_ARP_H_ 66 #include <stdint.h> 67 #include <sys/appleapiopts.h> 68 #include <netinet/in.h> 69 70 /* 71 * Address Resolution Protocol. 72 * 73 * See RFC 826 for protocol description. ARP packets are variable 74 * in size; the arphdr structure defines the fixed-length portion. 75 * Protocol type values are the same as those for 10 Mb/s Ethernet. 76 * It is followed by the variable-sized fields ar_sha, arp_spa, 77 * arp_tha and arp_tpa in that order, according to the lengths 78 * specified. Field names used correspond to RFC 826. 79 */ 80 struct arphdr { 81 u_short ar_hrd; /* format of hardware address */ 82 #define ARPHRD_ETHER 1 /* ethernet hardware format */ 83 #define ARPHRD_IEEE802 6 /* token-ring hardware format */ 84 #define ARPHRD_FRELAY 15 /* frame relay hardware format */ 85 #define ARPHRD_IEEE1394 24 /* IEEE1394 hardware address */ 86 #define ARPHRD_IEEE1394_EUI64 27 /* IEEE1394 EUI-64 */ 87 u_short ar_pro; /* format of protocol address */ 88 u_char ar_hln; /* length of hardware address */ 89 u_char ar_pln; /* length of protocol address */ 90 u_short ar_op; /* one of: */ 91 #define ARPOP_REQUEST 1 /* request to resolve address */ 92 #define ARPOP_REPLY 2 /* response to previous request */ 93 #define ARPOP_REVREQUEST 3 /* request protocol address given hardware */ 94 #define ARPOP_REVREPLY 4 /* response giving protocol address */ 95 #define ARPOP_INVREQUEST 8 /* request to identify peer */ 96 #define ARPOP_INVREPLY 9 /* response identifying peer */ 97 /* 98 * The remaining fields are variable in size, 99 * according to the sizes above. 100 */ 101 #ifdef COMMENT_ONLY 102 u_char ar_sha[]; /* sender hardware address */ 103 u_char ar_spa[]; /* sender protocol address */ 104 u_char ar_tha[]; /* target hardware address */ 105 u_char ar_tpa[]; /* target protocol address */ 106 #endif 107 }; 108 109 /* 110 * ARP ioctl request 111 */ 112 struct arpreq { 113 struct sockaddr arp_pa; /* protocol address */ 114 struct sockaddr arp_ha; /* hardware address */ 115 int arp_flags; /* flags */ 116 }; 117 /* arp_flags and at_flags field values */ 118 #define ATF_INUSE 0x01 /* entry in use */ 119 #define ATF_COM 0x02 /* completed entry (enaddr valid) */ 120 #define ATF_PERM 0x04 /* permanent entry */ 121 #define ATF_PUBL 0x08 /* publish entry (respond for other host) */ 122 #define ATF_USETRAILERS 0x10 /* has requested trailers */ 123 124 struct arpstat { 125 /* Normal things that happen: */ 126 uint32_t txrequests; /* # of ARP requests sent by this host. */ 127 uint32_t txreplies; /* # of ARP replies sent by this host. */ 128 uint32_t txannounces; /* # of ARP announcements sent by this host. */ 129 uint32_t rxrequests; /* # of ARP requests received by this host. */ 130 uint32_t rxreplies; /* # of ARP replies received by this host. */ 131 uint32_t received; /* # of ARP packets received by this host. */ 132 133 /* Abnormal event and error counting: */ 134 uint32_t txconflicts; /* # of ARP conflict probes sent */ 135 uint32_t invalidreqs; /* # of invalid ARP resolve requests */ 136 uint32_t reqnobufs; /* # of failed requests due to no memory */ 137 uint32_t dropped; /* # of packets dropped waiting for a reply. */ 138 uint32_t purged; /* # of packets purged while removing entries */ 139 uint32_t timeouts; /* # of times with entries removed */ 140 /* due to timeout. */ 141 uint32_t dupips; /* # of duplicate IPs detected. */ 142 143 /* General statistics */ 144 uint32_t inuse; /* # of ARP entries in routing table */ 145 uint32_t txurequests; /* # of ARP requests sent (unicast) */ 146 uint32_t held; /* # of packets held waiting for a reply */ 147 }; 148 149 #ifdef BSD_KERNEL_PRIVATE 150 extern struct arpstat arpstat; 151 #endif /* BSD_KERNEL_PRIVATE */ 152 153 #endif /* !_NET_IF_ARP_H_ */ 154