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if_inarp.h revision 1.41 
      1 /*	$NetBSD: if_inarp.h,v 1.41 2008/10/24 17:07:33 dyoung 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 struct llinfo_arp {
     38 	LIST_ENTRY(llinfo_arp) la_list;
     39 	struct	rtentry *la_rt;
     40 	struct	mbuf *la_hold;		/* last packet until resolved/timeout */
     41 	long	la_asked;		/* last time we QUERIED for this addr */
     42 #define la_timer la_rt->rt_rmx.rmx_expire /* deletion time in seconds */
     43 };
     44 
     45 struct sockaddr_inarp {
     46 	u_int8_t  sin_len;
     47 	u_int8_t  sin_family;
     48 	u_int16_t sin_port;
     49 	struct	  in_addr sin_addr;
     50 	struct	  in_addr sin_srcaddr;
     51 	u_int16_t sin_tos;
     52 	u_int16_t sin_other;
     53 #define SIN_PROXY 1
     54 };
     55 
     56 /*
     57  * IP and ethernet specific routing flags
     58  */
     59 #define	RTF_USETRAILERS	RTF_PROTO1	/* use trailers */
     60 #define	RTF_ANNOUNCE	RTF_PROTO2	/* announce new arp entry */
     61 
     62 #ifdef _KERNEL
     63 extern struct ifqueue arpintrq;
     64 void arp_ifinit(struct ifnet *, struct ifaddr *);
     65 void arp_rtrequest(int, struct rtentry *, const struct rt_addrinfo *);
     66 int arpresolve(struct ifnet *, struct rtentry *, struct mbuf *,
     67 		    const struct sockaddr *, u_char *);
     68 void arpintr(void);
     69 void arprequest(struct ifnet *, const struct in_addr *, const struct in_addr *,
     70     const u_int8_t *);
     71 void arp_init(void);
     72 void arp_drain(void);
     73 int arpioctl(u_long, void *);
     74 void arpwhohas(struct ifnet *, struct in_addr *);
     75 
     76 void revarpinput(struct mbuf *);
     77 void in_revarpinput(struct mbuf *);
     78 void revarprequest(struct ifnet *);
     79 int revarpwhoarewe(struct ifnet *, struct in_addr *, struct in_addr *);
     80 #endif
     81 
     82 #endif /* !_NETINET_IF_INARP_H_ */
     83