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1.1 root 1: /*
2: * Copyright (c) 1982, 1986 Regents of the University of California.
3: * 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_ether.h 7.5 (Berkeley) 6/28/90
34: */
35:
36: /*
37: * Structure of a 10Mb/s Ethernet header.
38: */
39: struct ether_header {
40: u_char ether_dhost[6];
41: u_char ether_shost[6];
42: u_short ether_type;
43: };
44:
45: #define ETHERTYPE_PUP 0x0200 /* PUP protocol */
46: #define ETHERTYPE_IP 0x0800 /* IP protocol */
47: #define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */
48:
49: /*
50: * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
51: * (type-ETHERTYPE_TRAIL)*512 bytes of data followed
52: * by an ETHER type (as given above) and then the (variable-length) header.
53: */
54: #define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */
55: #define ETHERTYPE_NTRAILER 16
56:
57: #define ETHERMTU 1500
58: #define ETHERMIN (60-14)
59:
60: /*
61: * Ethernet Address Resolution Protocol.
62: *
63: * See RFC 826 for protocol description. Structure below is adapted
64: * to resolving internet addresses. Field names used correspond to
65: * RFC 826.
66: */
67: struct ether_arp {
68: struct arphdr ea_hdr; /* fixed-size header */
69: u_char arp_sha[6]; /* sender hardware address */
70: u_char arp_spa[4]; /* sender protocol address */
71: u_char arp_tha[6]; /* target hardware address */
72: u_char arp_tpa[4]; /* target protocol address */
73: };
74: #define arp_hrd ea_hdr.ar_hrd
75: #define arp_pro ea_hdr.ar_pro
76: #define arp_hln ea_hdr.ar_hln
77: #define arp_pln ea_hdr.ar_pln
78: #define arp_op ea_hdr.ar_op
79:
80:
81: /*
82: * Structure shared between the ethernet driver modules and
83: * the address resolution code. For example, each ec_softc or il_softc
84: * begins with this structure.
85: */
86: struct arpcom {
87: struct ifnet ac_if; /* network-visible interface */
88: u_char ac_enaddr[6]; /* ethernet hardware address */
1.1.1.2 ! root 89: #ifdef INET
1.1 root 90: struct in_addr ac_ipaddr; /* copy of ip address- XXX */
1.1.1.2 ! root 91: #endif
1.1 root 92: };
93:
94: /*
95: * Internet to ethernet address resolution table.
96: */
97: struct arptab {
98: struct in_addr at_iaddr; /* internet address */
99: u_char at_enaddr[6]; /* ethernet address */
100: u_char at_timer; /* minutes since last reference */
101: u_char at_flags; /* flags */
102: struct mbuf *at_hold; /* last packet until resolved/timeout */
103: };
104:
105: #ifdef KERNEL
106: u_char etherbroadcastaddr[6];
107: struct arptab *arptnew();
108: int ether_output(), ether_input();
109: char *ether_sprintf();
110: #endif
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