1*199767f8SToomas Soome /*- 2*199767f8SToomas Soome * Copyright (c) 1986, 1993 3*199767f8SToomas Soome * The Regents of the University of California. All rights reserved. 4*199767f8SToomas Soome * 5*199767f8SToomas Soome * Redistribution and use in source and binary forms, with or without 6*199767f8SToomas Soome * modification, are permitted provided that the following conditions 7*199767f8SToomas Soome * are met: 8*199767f8SToomas Soome * 1. Redistributions of source code must retain the above copyright 9*199767f8SToomas Soome * notice, this list of conditions and the following disclaimer. 10*199767f8SToomas Soome * 2. Redistributions in binary form must reproduce the above copyright 11*199767f8SToomas Soome * notice, this list of conditions and the following disclaimer in the 12*199767f8SToomas Soome * documentation and/or other materials provided with the distribution. 13*199767f8SToomas Soome * 4. Neither the name of the University nor the names of its contributors 14*199767f8SToomas Soome * may be used to endorse or promote products derived from this software 15*199767f8SToomas Soome * without specific prior written permission. 16*199767f8SToomas Soome * 17*199767f8SToomas Soome * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18*199767f8SToomas Soome * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19*199767f8SToomas Soome * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20*199767f8SToomas Soome * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21*199767f8SToomas Soome * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22*199767f8SToomas Soome * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23*199767f8SToomas Soome * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24*199767f8SToomas Soome * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25*199767f8SToomas Soome * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26*199767f8SToomas Soome * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27*199767f8SToomas Soome * SUCH DAMAGE. 28*199767f8SToomas Soome * 29*199767f8SToomas Soome * @(#)if_arp.h 8.1 (Berkeley) 6/10/93 30*199767f8SToomas Soome * $FreeBSD$ 31*199767f8SToomas Soome */ 32*199767f8SToomas Soome 33*199767f8SToomas Soome #ifndef _NET_IF_ARP_H_ 34*199767f8SToomas Soome #define _NET_IF_ARP_H_ 35*199767f8SToomas Soome 36*199767f8SToomas Soome /* 37*199767f8SToomas Soome * Address Resolution Protocol. 38*199767f8SToomas Soome * 39*199767f8SToomas Soome * See RFC 826 for protocol description. ARP packets are variable 40*199767f8SToomas Soome * in size; the arphdr structure defines the fixed-length portion. 41*199767f8SToomas Soome * Protocol type values are the same as those for 10 Mb/s Ethernet. 42*199767f8SToomas Soome * It is followed by the variable-sized fields ar_sha, arp_spa, 43*199767f8SToomas Soome * arp_tha and arp_tpa in that order, according to the lengths 44*199767f8SToomas Soome * specified. Field names used correspond to RFC 826. 45*199767f8SToomas Soome */ 46*199767f8SToomas Soome struct arphdr { 47*199767f8SToomas Soome u_short ar_hrd; /* format of hardware address */ 48*199767f8SToomas Soome #define ARPHRD_ETHER 1 /* ethernet hardware format */ 49*199767f8SToomas Soome #define ARPHRD_IEEE802 6 /* token-ring hardware format */ 50*199767f8SToomas Soome #define ARPHRD_ARCNET 7 /* arcnet hardware format */ 51*199767f8SToomas Soome #define ARPHRD_FRELAY 15 /* frame relay hardware format */ 52*199767f8SToomas Soome #define ARPHRD_IEEE1394 24 /* firewire hardware format */ 53*199767f8SToomas Soome #define ARPHRD_INFINIBAND 32 /* infiniband hardware format */ 54*199767f8SToomas Soome u_short ar_pro; /* format of protocol address */ 55*199767f8SToomas Soome u_char ar_hln; /* length of hardware address */ 56*199767f8SToomas Soome u_char ar_pln; /* length of protocol address */ 57*199767f8SToomas Soome u_short ar_op; /* one of: */ 58*199767f8SToomas Soome #define ARPOP_REQUEST 1 /* request to resolve address */ 59*199767f8SToomas Soome #define ARPOP_REPLY 2 /* response to previous request */ 60*199767f8SToomas Soome #define ARPOP_REVREQUEST 3 /* request protocol address given hardware */ 61*199767f8SToomas Soome #define ARPOP_REVREPLY 4 /* response giving protocol address */ 62*199767f8SToomas Soome #define ARPOP_INVREQUEST 8 /* request to identify peer */ 63*199767f8SToomas Soome #define ARPOP_INVREPLY 9 /* response identifying peer */ 64*199767f8SToomas Soome /* 65*199767f8SToomas Soome * The remaining fields are variable in size, 66*199767f8SToomas Soome * according to the sizes above. 67*199767f8SToomas Soome */ 68*199767f8SToomas Soome #ifdef COMMENT_ONLY 69*199767f8SToomas Soome u_char ar_sha[]; /* sender hardware address */ 70*199767f8SToomas Soome u_char ar_spa[]; /* sender protocol address */ 71*199767f8SToomas Soome u_char ar_tha[]; /* target hardware address */ 72*199767f8SToomas Soome u_char ar_tpa[]; /* target protocol address */ 73*199767f8SToomas Soome #endif 74*199767f8SToomas Soome }; 75*199767f8SToomas Soome 76*199767f8SToomas Soome #define ar_sha(ap) (((caddr_t)((ap)+1)) + 0) 77*199767f8SToomas Soome #define ar_spa(ap) (((caddr_t)((ap)+1)) + (ap)->ar_hln) 78*199767f8SToomas Soome #define ar_tha(ap) (((caddr_t)((ap)+1)) + (ap)->ar_hln + (ap)->ar_pln) 79*199767f8SToomas Soome #define ar_tpa(ap) (((caddr_t)((ap)+1)) + 2*(ap)->ar_hln + (ap)->ar_pln) 80*199767f8SToomas Soome 81*199767f8SToomas Soome #define arphdr_len2(ar_hln, ar_pln) \ 82*199767f8SToomas Soome (sizeof(struct arphdr) + 2*(ar_hln) + 2*(ar_pln)) 83*199767f8SToomas Soome #define arphdr_len(ap) (arphdr_len2((ap)->ar_hln, (ap)->ar_pln)) 84*199767f8SToomas Soome 85*199767f8SToomas Soome /* 86*199767f8SToomas Soome * ARP ioctl request 87*199767f8SToomas Soome */ 88*199767f8SToomas Soome struct arpreq { 89*199767f8SToomas Soome struct sockaddr arp_pa; /* protocol address */ 90*199767f8SToomas Soome struct sockaddr arp_ha; /* hardware address */ 91*199767f8SToomas Soome int arp_flags; /* flags */ 92*199767f8SToomas Soome }; 93*199767f8SToomas Soome /* arp_flags and at_flags field values */ 94*199767f8SToomas Soome #define ATF_INUSE 0x01 /* entry in use */ 95*199767f8SToomas Soome #define ATF_COM 0x02 /* completed entry (enaddr valid) */ 96*199767f8SToomas Soome #define ATF_PERM 0x04 /* permanent entry */ 97*199767f8SToomas Soome #define ATF_PUBL 0x08 /* publish entry (respond for other host) */ 98*199767f8SToomas Soome #define ATF_USETRAILERS 0x10 /* has requested trailers */ 99*199767f8SToomas Soome 100*199767f8SToomas Soome struct arpstat { 101*199767f8SToomas Soome /* Normal things that happen: */ 102*199767f8SToomas Soome uint64_t txrequests; /* # of ARP requests sent by this host. */ 103*199767f8SToomas Soome uint64_t txreplies; /* # of ARP replies sent by this host. */ 104*199767f8SToomas Soome uint64_t rxrequests; /* # of ARP requests received by this host. */ 105*199767f8SToomas Soome uint64_t rxreplies; /* # of ARP replies received by this host. */ 106*199767f8SToomas Soome uint64_t received; /* # of ARP packets received by this host. */ 107*199767f8SToomas Soome 108*199767f8SToomas Soome uint64_t arp_spares[4]; /* For either the upper or lower half. */ 109*199767f8SToomas Soome /* Abnormal event and error counting: */ 110*199767f8SToomas Soome uint64_t dropped; /* # of packets dropped waiting for a reply. */ 111*199767f8SToomas Soome uint64_t timeouts; /* # of times with entries removed */ 112*199767f8SToomas Soome /* due to timeout. */ 113*199767f8SToomas Soome uint64_t dupips; /* # of duplicate IPs detected. */ 114*199767f8SToomas Soome }; 115*199767f8SToomas Soome 116*199767f8SToomas Soome #ifdef _KERNEL 117*199767f8SToomas Soome #include <sys/counter.h> 118*199767f8SToomas Soome #include <net/vnet.h> 119*199767f8SToomas Soome 120*199767f8SToomas Soome VNET_PCPUSTAT_DECLARE(struct arpstat, arpstat); 121*199767f8SToomas Soome /* 122*199767f8SToomas Soome * In-kernel consumers can use these accessor macros directly to update 123*199767f8SToomas Soome * stats. 124*199767f8SToomas Soome */ 125*199767f8SToomas Soome #define ARPSTAT_ADD(name, val) \ 126*199767f8SToomas Soome VNET_PCPUSTAT_ADD(struct arpstat, arpstat, name, (val)) 127*199767f8SToomas Soome #define ARPSTAT_SUB(name, val) ARPSTAT_ADD(name, -(val)) 128*199767f8SToomas Soome #define ARPSTAT_INC(name) ARPSTAT_ADD(name, 1) 129*199767f8SToomas Soome #define ARPSTAT_DEC(name) ARPSTAT_SUB(name, 1) 130*199767f8SToomas Soome 131*199767f8SToomas Soome #endif /* _KERNEL */ 132*199767f8SToomas Soome 133*199767f8SToomas Soome #endif /* !_NET_IF_ARP_H_ */ 134