1/* $NetBSD: if_media.c,v 1.2 2008/04/28 20:23:03 martin Exp $ */
2
3/*-
4 * Copyright (c) 1997, 1998, 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34#if defined(LIBC_SCCS) && !defined(lint)
35__RCSID("$NetBSD: if_media.c,v 1.2 2008/04/28 20:23:03 martin Exp $");
36#endif
37
38#include <stdio.h>
39#include <string.h>
40#include <stdlib.h>
41#include <sys/types.h>
42#include <net/if_media.h>
43
44struct ifmedia_description ifm_mode_descriptions[] =
45 IFM_MODE_DESCRIPTIONS;
46
47struct ifmedia_description ifm_type_descriptions[] =
48 IFM_TYPE_DESCRIPTIONS;
49
50struct ifmedia_description ifm_subtype_descriptions[] =
51 IFM_SUBTYPE_DESCRIPTIONS;
52
53struct ifmedia_description ifm_option_descriptions[] =
54 IFM_OPTION_DESCRIPTIONS;
55
56const char *
57get_media_type_string(int mword)
58{
59 struct ifmedia_description *desc;
60
61 for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++) {
62 if (IFM_TYPE(mword) == desc->ifmt_word)
63 return (desc->ifmt_string);
64 }
65 return "<unknown type>";
66}
67
68const char *
69get_media_subtype_string(int mword)
70{
71 struct ifmedia_description *desc;
72
73 for (desc = ifm_subtype_descriptions; desc->ifmt_string != NULL;
74 desc++) {
75 if (IFM_TYPE_MATCH(desc->ifmt_word, mword) &&
76 IFM_SUBTYPE(desc->ifmt_word) == IFM_SUBTYPE(mword))
77 return desc->ifmt_string;
78 }
79 return "<unknown subtype>";
80}
81
82const char *
83get_media_mode_string(int mword)
84{
85 struct ifmedia_description *desc;
86
87 for (desc = ifm_mode_descriptions; desc->ifmt_string != NULL; desc++) {
88 if (IFM_TYPE_MATCH(desc->ifmt_word, mword) &&
89 IFM_MODE(mword) == IFM_MODE(desc->ifmt_word))
90 return desc->ifmt_string;
91 }
92 return NULL;
93}
94
95const char *
96get_media_option_string(int *mwordp)
97{
98 struct ifmedia_description *desc;
99 int mword = *mwordp;
100
101 for (desc = ifm_option_descriptions; desc->ifmt_string != NULL;
102 desc++) {
103 if (!IFM_TYPE_MATCH(desc->ifmt_word, mword))
104 continue;
105 if (mword & IFM_OPTIONS(desc->ifmt_word)) {
106 *mwordp = mword & ~IFM_OPTIONS(desc->ifmt_word);
107 return desc->ifmt_string;
108 }
109 }
110
111 /* Historical behaviour is to ignore unknown option bits! */
112 *mwordp = mword & ~IFM_OPTIONS(~0);
113 return NULL;
114}
115
116int
117lookup_media_word(struct ifmedia_description *desc, int type, const char *val)
118{
119
120 for (; desc->ifmt_string != NULL; desc++) {
121 if (IFM_TYPE_MATCH(desc->ifmt_word, type) &&
122 strcasecmp(desc->ifmt_string, val) == 0)
123 return (desc->ifmt_word);
124 }
125 return -1;
126}
127
128int
129get_media_mode(int type, const char *val)
130{
131
132 return lookup_media_word(ifm_mode_descriptions, type, val);
133}
134
135int
136get_media_subtype(int type, const char *val)
137{
138
139 return lookup_media_word(ifm_subtype_descriptions, type, val);
140}
141
142int
143get_media_options(int type, const char *val, char **invalid)
144{
145 char *optlist, *str;
146 int option, rval = 0;
147
148 /* We muck with the string, so copy it. */
149 optlist = strdup(val);
150 if (optlist == NULL) {
151 if (invalid != NULL)
152 *invalid = NULL;
153 return -1;
154 }
155 str = optlist;
156
157 /*
158 * Look up the options in the user-provided comma-separated list.
159 */
160 type = IFM_TYPE(type);
161 for (; (str = strtok(str, ",")) != NULL; str = NULL) {
162 option = lookup_media_word(ifm_option_descriptions, type, str);
163 if (option != -1) {
164 rval |= IFM_OPTIONS(option);
165 continue;
166 }
167 rval = -1;
168 if (invalid == NULL)
169 break;
170 /* Pass invalid option at start of malloced buffer */
171 if (str != optlist)
172 memmove(optlist, str, strlen(str) + 1);
173 /* Caller should free() or exit() */
174 *invalid = optlist;
175 return rval;
176 }
177
178 free(optlist);
179 return (rval);
180}
181