The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netinet/if_inarp.h

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    1 /*      $NetBSD: if_inarp.h,v 1.53 2022/09/03 01:35:03 thorpej Exp $    */
    2 
    3 /*
    4  * Copyright (c) 1982, 1986, 1993
    5  *      The Regents of the University of California.  All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. Neither the name of the University nor the names of its contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  *      @(#)if_ether.h  8.1 (Berkeley) 6/10/93
   32  */
   33 
   34 #ifndef _NETINET_IF_INARP_H_
   35 #define _NETINET_IF_INARP_H_
   36 
   37 #include <sys/queue.h>          /* for LIST_ENTRY */
   38 #include <netinet/in.h>         /* for struct in_addr */
   39 
   40 struct llinfo_arp {
   41         LIST_ENTRY(llinfo_arp) la_list;
   42         struct  rtentry *la_rt;
   43         struct  mbuf *la_hold;          /* last packet until resolved/timeout */
   44         long    la_asked;               /* last time we QUERIED for this addr */
   45 };
   46 
   47 struct sockaddr_inarp {
   48         u_int8_t  sin_len;
   49         u_int8_t  sin_family;
   50         u_int16_t sin_port;
   51         struct    in_addr sin_addr;
   52         struct    in_addr sin_srcaddr;
   53         u_int16_t sin_tos;
   54         u_int16_t sin_other;
   55 #define SIN_PROXY 1
   56 };
   57 
   58 #ifdef _KERNEL
   59 
   60 #include <net/pktqueue.h>
   61 
   62 /* ARP timings from RFC5227 */
   63 #define PROBE_WAIT               1
   64 #define PROBE_NUM                3
   65 #define PROBE_MIN                1
   66 #define PROBE_MAX                2
   67 #define ANNOUNCE_WAIT            2
   68 #define ANNOUNCE_NUM             2
   69 #define ANNOUNCE_INTERVAL        2
   70 #define MAX_CONFLICTS           10
   71 #define RATE_LIMIT_INTERVAL     60
   72 #define DEFEND_INTERVAL         10
   73 
   74 extern pktqueue_t *arp_pktq;
   75 void arp_ifinit(struct ifnet *, struct ifaddr *);
   76 void arp_rtrequest(int, struct rtentry *, const struct rt_addrinfo *);
   77 int arpresolve(struct ifnet *, const struct rtentry *, struct mbuf *,
   78     const struct sockaddr *, void *, size_t);
   79 void arpintr(void *);
   80 void arpannounce(struct ifnet *, struct ifaddr *, const uint8_t *);
   81 struct llentry *arplookup(struct ifnet *,
   82     const struct in_addr *, const struct sockaddr *, int);
   83 void arp_drain(void);
   84 int arpioctl(u_long, void *);
   85 void arpwhohas(struct ifnet *, struct in_addr *);
   86 void arp_nud_hint(struct rtentry *);
   87 
   88 void revarpinput(struct mbuf *);
   89 int revarpwhoarewe(struct ifnet *, struct in_addr *, struct in_addr *);
   90 #endif
   91 
   92 #endif /* !_NETINET_IF_INARP_H_ */

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