/* * Copyright (c) 2000-2016 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)if_arp.h 8.1 (Berkeley) 6/10/93 * $FreeBSD: src/sys/net/if_arp.h,v 1.14.2.1 2000/07/11 20:46:55 archie Exp $ */ #ifndef _NET_IF_ARP_H_ #define _NET_IF_ARP_H_ #include <stdint.h> #include <sys/appleapiopts.h> #include <netinet/in.h> /* * Address Resolution Protocol. * * See RFC 826 for protocol description. ARP packets are variable * in size; the arphdr structure defines the fixed-length portion. * Protocol type values are the same as those for 10 Mb/s Ethernet. * It is followed by the variable-sized fields ar_sha, arp_spa, * arp_tha and arp_tpa in that order, according to the lengths * specified. Field names used correspond to RFC 826. */ struct arphdr { u_short ar_hrd; /* format of hardware address */ #define ARPHRD_ETHER 1 /* ethernet hardware format */ #define ARPHRD_IEEE802 6 /* token-ring hardware format */ #define ARPHRD_FRELAY 15 /* frame relay hardware format */ #define ARPHRD_IEEE1394 24 /* IEEE1394 hardware address */ #define ARPHRD_IEEE1394_EUI64 27 /* IEEE1394 EUI-64 */ u_short ar_pro; /* format of protocol address */ u_char ar_hln; /* length of hardware address */ u_char ar_pln; /* length of protocol address */ u_short ar_op; /* one of: */ #define ARPOP_REQUEST 1 /* request to resolve address */ #define ARPOP_REPLY 2 /* response to previous request */ #define ARPOP_REVREQUEST 3 /* request protocol address given hardware */ #define ARPOP_REVREPLY 4 /* response giving protocol address */ #define ARPOP_INVREQUEST 8 /* request to identify peer */ #define ARPOP_INVREPLY 9 /* response identifying peer */ /* * The remaining fields are variable in size, * according to the sizes above. */ #ifdef COMMENT_ONLY u_char ar_sha[]; /* sender hardware address */ u_char ar_spa[]; /* sender protocol address */ u_char ar_tha[]; /* target hardware address */ u_char ar_tpa[]; /* target protocol address */ #endif }; /* * ARP ioctl request */ struct arpreq { struct sockaddr arp_pa; /* protocol address */ struct sockaddr arp_ha; /* hardware address */ int arp_flags; /* flags */ }; /* arp_flags and at_flags field values */ #define ATF_INUSE 0x01 /* entry in use */ #define ATF_COM 0x02 /* completed entry (enaddr valid) */ #define ATF_PERM 0x04 /* permanent entry */ #define ATF_PUBL 0x08 /* publish entry (respond for other host) */ #define ATF_USETRAILERS 0x10 /* has requested trailers */ struct arpstat { /* Normal things that happen: */ uint32_t txrequests; /* # of ARP requests sent by this host. */ uint32_t txreplies; /* # of ARP replies sent by this host. */ uint32_t txannounces; /* # of ARP announcements sent by this host. */ uint32_t rxrequests; /* # of ARP requests received by this host. */ uint32_t rxreplies; /* # of ARP replies received by this host. */ uint32_t received; /* # of ARP packets received by this host. */ /* Abnormal event and error counting: */ uint32_t txconflicts; /* # of ARP conflict probes sent */ uint32_t invalidreqs; /* # of invalid ARP resolve requests */ uint32_t reqnobufs; /* # of failed requests due to no memory */ uint32_t dropped; /* # of packets dropped waiting for a reply. */ uint32_t purged; /* # of packets purged while removing entries */ uint32_t timeouts; /* # of times with entries removed */ /* due to timeout. */ uint32_t dupips; /* # of duplicate IPs detected. */ /* General statistics */ uint32_t inuse; /* # of ARP entries in routing table */ uint32_t txurequests; /* # of ARP requests sent (unicast) */ uint32_t held; /* # of packets held waiting for a reply */ }; #ifdef BSD_KERNEL_PRIVATE extern struct arpstat arpstat; #endif /* BSD_KERNEL_PRIVATE */ #endif /* !_NET_IF_ARP_H_ */