1 |
207 |
jeremybenn |
/*
|
2 |
|
|
* Copyright (c) 1986, 1993
|
3 |
|
|
* The Regents of the University of California. All rights reserved.
|
4 |
|
|
*
|
5 |
|
|
* Redistribution and use in source and binary forms, with or without
|
6 |
|
|
* modification, are permitted provided that the following conditions
|
7 |
|
|
* are met:
|
8 |
|
|
* 1. Redistributions of source code must retain the above copyright
|
9 |
|
|
* notice, this list of conditions and the following disclaimer.
|
10 |
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
11 |
|
|
* notice, this list of conditions and the following disclaimer in the
|
12 |
|
|
* documentation and/or other materials provided with the distribution.
|
13 |
|
|
* 3. All advertising materials mentioning features or use of this software
|
14 |
|
|
* must display the following acknowledgement:
|
15 |
|
|
* This product includes software developed by the University of
|
16 |
|
|
* California, Berkeley and its contributors.
|
17 |
|
|
* 4. Neither the name of the University nor the names of its contributors
|
18 |
|
|
* may be used to endorse or promote products derived from this software
|
19 |
|
|
* without specific prior written permission.
|
20 |
|
|
*
|
21 |
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
22 |
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
23 |
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
24 |
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
25 |
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
26 |
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
27 |
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
28 |
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
29 |
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
30 |
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
31 |
|
|
* SUCH DAMAGE.
|
32 |
|
|
*
|
33 |
|
|
* @(#)if_arp.h 8.1 (Berkeley) 6/10/93
|
34 |
|
|
* $FreeBSD: src/sys/net/if_arp.h,v 1.16 2001/10/14 20:17:52 fjoe Exp $
|
35 |
|
|
*/
|
36 |
|
|
|
37 |
|
|
#ifndef _NET_IF_ARP_H_
|
38 |
|
|
#define _NET_IF_ARP_H_
|
39 |
|
|
|
40 |
|
|
/*
|
41 |
|
|
* Address Resolution Protocol.
|
42 |
|
|
*
|
43 |
|
|
* See RFC 826 for protocol description. ARP packets are variable
|
44 |
|
|
* in size; the arphdr structure defines the fixed-length portion.
|
45 |
|
|
* Protocol type values are the same as those for 10 Mb/s Ethernet.
|
46 |
|
|
* It is followed by the variable-sized fields ar_sha, arp_spa,
|
47 |
|
|
* arp_tha and arp_tpa in that order, according to the lengths
|
48 |
|
|
* specified. Field names used correspond to RFC 826.
|
49 |
|
|
*/
|
50 |
|
|
struct arphdr {
|
51 |
|
|
u_short ar_hrd; /* format of hardware address */
|
52 |
|
|
#define ARPHRD_ETHER 1 /* ethernet hardware format */
|
53 |
|
|
#define ARPHRD_IEEE802 6 /* token-ring hardware format */
|
54 |
|
|
#define ARPHRD_ARCNET 7 /* arcnet hardware format */
|
55 |
|
|
#define ARPHRD_FRELAY 15 /* frame relay hardware format */
|
56 |
|
|
u_short ar_pro; /* format of protocol address */
|
57 |
|
|
u_char ar_hln; /* length of hardware address */
|
58 |
|
|
u_char ar_pln; /* length of protocol address */
|
59 |
|
|
u_short ar_op; /* one of: */
|
60 |
|
|
#define ARPOP_REQUEST 1 /* request to resolve address */
|
61 |
|
|
#define ARPOP_REPLY 2 /* response to previous request */
|
62 |
|
|
#define ARPOP_REVREQUEST 3 /* request protocol address given hardware */
|
63 |
|
|
#define ARPOP_REVREPLY 4 /* response giving protocol address */
|
64 |
|
|
#define ARPOP_INVREQUEST 8 /* request to identify peer */
|
65 |
|
|
#define ARPOP_INVREPLY 9 /* response identifying peer */
|
66 |
|
|
/*
|
67 |
|
|
* The remaining fields are variable in size,
|
68 |
|
|
* according to the sizes above.
|
69 |
|
|
*/
|
70 |
|
|
#ifdef COMMENT_ONLY
|
71 |
|
|
u_char ar_sha[]; /* sender hardware address */
|
72 |
|
|
u_char ar_spa[]; /* sender protocol address */
|
73 |
|
|
u_char ar_tha[]; /* target hardware address */
|
74 |
|
|
u_char ar_tpa[]; /* target protocol address */
|
75 |
|
|
#endif
|
76 |
|
|
};
|
77 |
|
|
|
78 |
|
|
#define ar_sha(ap) (((caddr_t)((ap)+1)) + 0)
|
79 |
|
|
#define ar_spa(ap) (((caddr_t)((ap)+1)) + (ap)->ar_hln)
|
80 |
|
|
#define ar_tha(ap) (((caddr_t)((ap)+1)) + (ap)->ar_hln + (ap)->ar_pln)
|
81 |
|
|
#define ar_tpa(ap) (((caddr_t)((ap)+1)) + 2*(ap)->ar_hln + (ap)->ar_pln)
|
82 |
|
|
|
83 |
|
|
#define arphdr_len2(ar_hln, ar_pln) \
|
84 |
|
|
(sizeof(struct arphdr) + 2*(ar_hln) + 2*(ar_pln))
|
85 |
|
|
#define arphdr_len(ap) (arphdr_len2((ap)->ar_hln, (ap)->ar_pln))
|
86 |
|
|
|
87 |
|
|
/*
|
88 |
|
|
* ARP ioctl request
|
89 |
|
|
*/
|
90 |
|
|
struct arpreq {
|
91 |
|
|
struct sockaddr arp_pa; /* protocol address */
|
92 |
|
|
struct sockaddr arp_ha; /* hardware address */
|
93 |
|
|
int arp_flags; /* flags */
|
94 |
|
|
};
|
95 |
|
|
/* arp_flags and at_flags field values */
|
96 |
|
|
#define ATF_INUSE 0x01 /* entry in use */
|
97 |
|
|
#define ATF_COM 0x02 /* completed entry (enaddr valid) */
|
98 |
|
|
#define ATF_PERM 0x04 /* permanent entry */
|
99 |
|
|
#define ATF_PUBL 0x08 /* publish entry (respond for other host) */
|
100 |
|
|
#define ATF_USETRAILERS 0x10 /* has requested trailers */
|
101 |
|
|
|
102 |
|
|
#ifdef _KERNEL
|
103 |
|
|
/*
|
104 |
|
|
* Structure shared between the ethernet driver modules and
|
105 |
|
|
* the address resolution code. For example, each ec_softc or il_softc
|
106 |
|
|
* begins with this structure.
|
107 |
|
|
*/
|
108 |
|
|
struct arpcom {
|
109 |
|
|
/*
|
110 |
|
|
* The ifnet struct _must_ be at the head of this structure.
|
111 |
|
|
*/
|
112 |
|
|
struct ifnet ac_if; /* network-visible interface */
|
113 |
|
|
u_char ac_enaddr[6]; /* ethernet hardware address */
|
114 |
|
|
int ac_multicnt; /* length of ac_multiaddrs list */
|
115 |
|
|
void *ac_netgraph; /* ng_ether(4) netgraph node info */
|
116 |
|
|
};
|
117 |
|
|
|
118 |
|
|
extern u_char etherbroadcastaddr[6];
|
119 |
|
|
#endif
|
120 |
|
|
|
121 |
|
|
#endif /* !_NET_IF_ARP_H_ */
|