1 | /* $NetBSD: if_token.h,v 1.17 2015/12/16 05:44:59 ozaki-r 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 | * from: NetBSD: if_fddi.h,v 1.2 1995/08/19 04:35:28 cgd Exp |
32 | */ |
33 | |
34 | #ifndef _NET_IF_TOKEN_H_ |
35 | #define _NET_IF_TOKEN_H_ |
36 | |
37 | #define ISO88025_ADDR_LEN 6 |
38 | |
39 | /* Token Ring physical header */ |
40 | struct { |
41 | uint8_t ; /* access control field */ |
42 | uint8_t ; /* frame control field */ |
43 | uint8_t [ISO88025_ADDR_LEN]; /* dest. address */ |
44 | uint8_t [ISO88025_ADDR_LEN]; /* source address */ |
45 | } __packed; |
46 | |
47 | #define TOKEN_MAX_BRIDGE 8 |
48 | |
49 | /* Token Ring routing information field */ |
50 | struct token_rif { |
51 | uint16_t tr_rcf; /* route control field */ |
52 | uint16_t tr_rdf[TOKEN_MAX_BRIDGE]; /* route-designator fields */ |
53 | } __packed; |
54 | |
55 | /* standard values for address control and frame control field */ |
56 | #define TOKEN_AC 0x10 |
57 | #define TOKEN_FC 0x40 |
58 | |
59 | #define TOKEN_RI_PRESENT 0x80 /* routing info present bit */ |
60 | #define TOKEN_RCF_LEN_MASK 0x1f00 |
61 | #define TOKEN_RCF_BROADCAST_MASK 0xe000 |
62 | #define TOKEN_RCF_BROADCAST_ALL 0x8000 /* all routes broadcast */ |
63 | #define TOKEN_RCF_BROADCAST_SINGLE 0xc000 /* single route broadcast */ |
64 | |
65 | /* |
66 | * A Token-ring frame consists of |
67 | * header + rif + llcinfo + fcs |
68 | * 14 + 2 * (0 ... 9) + x + 4 octets |
69 | * where llcinfo contains the llcsnap header (8 octets) and the IP frame |
70 | */ |
71 | /* LLC INFO (802.5PD-2) */ |
72 | #define TOKEN_RCF_FRAME0 0x0000 /* 516 */ |
73 | #define TOKEN_RCF_FRAME1 0x0010 /* 1500 */ |
74 | #define TOKEN_RCF_FRAME2 0x0020 /* 2052 */ |
75 | #define TOKEN_RCF_FRAME3 0x0030 /* 4472 */ |
76 | #define TOKEN_RCF_FRAME4 0x0040 /* 8144 */ |
77 | #define TOKEN_RCF_FRAME5 0x0050 /* 11407 */ |
78 | #define TOKEN_RCF_FRAME6 0x0060 /* 17800 */ |
79 | #define TOKEN_RCF_FRAME7 0x0070 /* 65535 */ |
80 | #define TOKEN_RCF_FRAME_MASK 0x0070 |
81 | |
82 | #define TOKEN_RCF_DIRECTION 0x0080 |
83 | |
84 | /* |
85 | * According to RFC 1042 |
86 | */ |
87 | #define IPMTU_4MBIT_MAX 4464 |
88 | #define IPMTU_16MBIT_MAX 8188 |
89 | |
90 | /* |
91 | * RFC 1042: |
92 | * It is recommended that all implementations support IP packets |
93 | * of at least 2002 octets. |
94 | */ |
95 | #define ISO88025_MTU 2002 |
96 | |
97 | /* |
98 | * This assumes that route information fields are appended to token_header. |
99 | */ |
100 | #define TOKEN_RIF(x) ((struct token_rif *) ((x) + 1)) |
101 | |
102 | #define TOKEN_RIF_LLE(lle) ((struct token_rif *) (lle)->la_opaque) |
103 | #define TOKEN_RIF_LLE_ASSERT(lle) KASSERT((lle)->la_opaque != NULL) |
104 | |
105 | /* |
106 | * This is a kludge to get at the token ring mac header and the source route |
107 | * information after m_adj() has been used on the mbuf. |
108 | * Note that m is always an mbuf with a packet header. |
109 | */ |
110 | #define M_TRHSTART(m) \ |
111 | (ALIGN(((m)->m_flags & M_EXT ? (m)->m_ext.ext_buf : &(m)->m_pktdat[0]) \ |
112 | + sizeof (struct token_header)) - sizeof(struct token_header)) |
113 | |
114 | #if defined(_KERNEL) |
115 | /* |
116 | * XXX we need if_ethersubr.c with all these defines |
117 | */ |
118 | #define tokenbroadcastaddr etherbroadcastaddr |
119 | #define token_ipmulticast_min ether_ipmulticast_min |
120 | #define token_ipmulticast_max ether_ipmulticast_max |
121 | #define token_sprintf ether_sprintf |
122 | |
123 | void token_ifattach(struct ifnet *, void *); |
124 | void token_ifdetach(struct ifnet *); |
125 | #endif |
126 | |
127 | #endif /* !_NET_IF_TOKEN_H_ */ |
128 | |