1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/*-
* Copyright (c) 1982, 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.
* 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_ether.h 8.3 (Berkeley) 5/2/95
* $FreeBSD$
*/
#ifndef _NETINET_IF_ETHER_H_
#define _NETINET_IF_ETHER_H_
#include <net/ethernet.h>
#include <net/if_arp.h>
/*
* Macro to map an IP multicast address to an Ethernet multicast address.
* The high-order 25 bits of the Ethernet address are statically assigned,
* and the low-order 23 bits are taken from the low end of the IP address.
*/
#define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \
/* struct in_addr *ipaddr; */ \
/* u_char enaddr[ETHER_ADDR_LEN]; */ \
{ \
(enaddr)[0] = 0x01; \
(enaddr)[1] = 0x00; \
(enaddr)[2] = 0x5e; \
(enaddr)[3] = ((const u_char *)ipaddr)[1] & 0x7f; \
(enaddr)[4] = ((const u_char *)ipaddr)[2]; \
(enaddr)[5] = ((const u_char *)ipaddr)[3]; \
}
/*
* Macro to map an IP6 multicast address to an Ethernet multicast address.
* The high-order 16 bits of the Ethernet address are statically assigned,
* and the low-order 32 bits are taken from the low end of the IP6 address.
*/
#define ETHER_MAP_IPV6_MULTICAST(ip6addr, enaddr) \
/* struct in6_addr *ip6addr; */ \
/* u_char enaddr[ETHER_ADDR_LEN]; */ \
{ \
(enaddr)[0] = 0x33; \
(enaddr)[1] = 0x33; \
(enaddr)[2] = ((const u_char *)ip6addr)[12]; \
(enaddr)[3] = ((const u_char *)ip6addr)[13]; \
(enaddr)[4] = ((const u_char *)ip6addr)[14]; \
(enaddr)[5] = ((const u_char *)ip6addr)[15]; \
}
/*
* Ethernet Address Resolution Protocol.
*
* See RFC 826 for protocol description. Structure below is adapted
* to resolving internet addresses. Field names used correspond to
* RFC 826.
*/
struct ether_arp {
struct arphdr ea_hdr; /* fixed-size header */
u_char arp_sha[ETHER_ADDR_LEN]; /* sender hardware address */
u_char arp_spa[4]; /* sender protocol address */
u_char arp_tha[ETHER_ADDR_LEN]; /* target hardware address */
u_char arp_tpa[4]; /* target protocol address */
};
#define arp_hrd ea_hdr.ar_hrd
#define arp_pro ea_hdr.ar_pro
#define arp_hln ea_hdr.ar_hln
#define arp_pln ea_hdr.ar_pln
#define arp_op ea_hdr.ar_op
#ifndef BURN_BRIDGES /* Can be used by third party software. */
struct sockaddr_inarp {
u_char sin_len;
u_char sin_family;
u_short sin_port;
struct in_addr sin_addr;
struct in_addr sin_srcaddr;
u_short sin_tos;
u_short sin_other;
#define SIN_PROXY 1
};
#endif /* !BURN_BRIDGES */
/*
* IP and ethernet specific routing flags
*/
#define RTF_USETRAILERS RTF_PROTO1 /* use trailers */
#define RTF_ANNOUNCE RTF_PROTO2 /* announce new arp entry */
#ifdef _KERNEL
extern u_char ether_ipmulticast_min[ETHER_ADDR_LEN];
extern u_char ether_ipmulticast_max[ETHER_ADDR_LEN];
struct ifaddr;
int arpresolve_addr(struct ifnet *ifp, int flags,
const struct sockaddr *dst, char *desten, uint32_t *pflags);
int arpresolve(struct ifnet *ifp, int is_gw, struct mbuf *m,
const struct sockaddr *dst, u_char *desten, uint32_t *pflags);
void arprequest(struct ifnet *, const struct in_addr *,
const struct in_addr *, u_char *);
void arp_ifinit(struct ifnet *, struct ifaddr *);
void arp_announce_ifaddr(struct ifnet *, struct in_addr addr, u_char *);
#endif
#endif
|
