FreeBSD/Linux Kernel Cross Reference
sys/net/if_arc.h
1 /* $NetBSD: if_arc.h,v 1.13 1999/11/19 20:41:19 thorpej Exp $ */
2 /* $FreeBSD: releng/7.4/sys/net/if_arc.h 157681 2006-04-12 07:44:31Z rwatson $ */
3
4 /*-
5 * Copyright (c) 1982, 1986, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * from: NetBSD: if_ether.h,v 1.10 1994/06/29 06:37:55 cgd Exp
33 * @(#)if_ether.h 8.1 (Berkeley) 6/10/93
34 */
35
36 #ifndef _NET_IF_ARC_H_
37 #define _NET_IF_ARC_H_
38
39 /*
40 * Arcnet address - 1 octets
41 * don't know who uses this.
42 */
43 struct arc_addr {
44 u_int8_t arc_addr_octet[1];
45 } __packed;
46
47 /*
48 * Structure of a 2.5MB/s Arcnet header.
49 * as given to interface code.
50 */
51 struct arc_header {
52 u_int8_t arc_shost;
53 u_int8_t arc_dhost;
54 u_int8_t arc_type;
55 /*
56 * only present for newstyle encoding with LL fragmentation.
57 * Don't use sizeof(anything), use ARC_HDR{,NEW}LEN instead.
58 */
59 u_int8_t arc_flag;
60 u_int16_t arc_seqid;
61
62 /*
63 * only present in exception packets (arc_flag == 0xff)
64 */
65 u_int8_t arc_type2; /* same as arc_type */
66 u_int8_t arc_flag2; /* real flag value */
67 u_int16_t arc_seqid2; /* real seqid value */
68 } __packed;
69
70 #define ARC_ADDR_LEN 1
71
72 #define ARC_HDRLEN 3
73 #define ARC_HDRNEWLEN 6
74 #define ARC_HDRNEWLEN_EXC 10
75
76 /* these lengths are data link layer length - 2 * ARC_ADDR_LEN */
77 #define ARC_MIN_LEN 1
78 #define ARC_MIN_FORBID_LEN 254
79 #define ARC_MAX_FORBID_LEN 256
80 #define ARC_MAX_LEN 508
81 #define ARC_MAX_DATA 504
82
83 /* RFC 1051 */
84 #define ARCTYPE_IP_OLD 240 /* IP protocol */
85 #define ARCTYPE_ARP_OLD 241 /* address resolution protocol */
86
87 /* RFC 1201 */
88 #define ARCTYPE_IP 212 /* IP protocol */
89 #define ARCTYPE_ARP 213 /* address resolution protocol */
90 #define ARCTYPE_REVARP 214 /* reverse addr resolution protocol */
91
92 #define ARCTYPE_ATALK 221 /* Appletalk */
93 #define ARCTYPE_BANIAN 247 /* Banyan Vines */
94 #define ARCTYPE_IPX 250 /* Novell IPX */
95
96 #define ARCTYPE_INET6 0xc4 /* IPng */
97 #define ARCTYPE_DIAGNOSE 0x80 /* as per ANSI/ATA 878.1 */
98
99 #define ARCMTU 507
100 #define ARCMIN 0
101
102 #define ARC_PHDS_MAXMTU 60480
103
104 struct arccom {
105 struct ifnet *ac_ifp; /* network-visible interface */
106
107 u_int16_t ac_seqid; /* seq. id used by PHDS encap. */
108
109 u_int8_t arc_shost;
110 u_int8_t arc_dhost;
111 u_int8_t arc_type;
112
113 u_int8_t dummy0;
114 u_int16_t dummy1;
115 int sflag, fsflag, rsflag;
116 struct mbuf *curr_frag;
117
118 struct ac_frag {
119 u_int8_t af_maxflag; /* from first packet */
120 u_int8_t af_lastseen; /* last split flag seen */
121 u_int16_t af_seqid;
122 struct mbuf *af_packet;
123 } ac_fragtab[256]; /* indexed by sender ll address */
124 };
125
126 #ifdef _KERNEL
127 extern u_int8_t arcbroadcastaddr;
128 extern int arc_ipmtu; /* XXX new ip only, no RFC 1051! */
129
130 void arc_ifattach(struct ifnet *, u_int8_t);
131 void arc_ifdetach(struct ifnet *);
132 void arc_storelladdr(struct ifnet *, u_int8_t);
133 int arc_isphds(u_int8_t);
134 void arc_input(struct ifnet *, struct mbuf *);
135 int arc_output(struct ifnet *, struct mbuf *,
136 struct sockaddr *, struct rtentry *);
137 int arc_ioctl(struct ifnet *, int, caddr_t);
138
139 void arc_frag_init(struct ifnet *);
140 struct mbuf * arc_frag_next(struct ifnet *);
141 #endif
142
143 #endif /* _NET_IF_ARC_H_ */
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