if_media.c revision 1.1
1 /* $NetBSD: if_media.c,v 1.1 2004/11/11 20:36:28 dsl 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 #include <sys/cdefs.h> 41 #if defined(LIBC_SCCS) && !defined(lint) 42 __RCSID("$NetBSD: if_media.c,v 1.1 2004/11/11 20:36:28 dsl Exp $"); 43 #endif 44 45 #include <stdio.h> 46 #include <string.h> 47 #include <stdlib.h> 48 #include <sys/types.h> 49 #include <net/if_media.h> 50 51 struct ifmedia_description ifm_mode_descriptions[] = 52 IFM_MODE_DESCRIPTIONS; 53 54 struct ifmedia_description ifm_type_descriptions[] = 55 IFM_TYPE_DESCRIPTIONS; 56 57 struct ifmedia_description ifm_subtype_descriptions[] = 58 IFM_SUBTYPE_DESCRIPTIONS; 59 60 struct ifmedia_description ifm_option_descriptions[] = 61 IFM_OPTION_DESCRIPTIONS; 62 63 const char * 64 get_media_type_string(int mword) 65 { 66 struct ifmedia_description *desc; 67 68 for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++) { 69 if (IFM_TYPE(mword) == desc->ifmt_word) 70 return (desc->ifmt_string); 71 } 72 return "<unknown type>"; 73 } 74 75 const char * 76 get_media_subtype_string(int mword) 77 { 78 struct ifmedia_description *desc; 79 80 for (desc = ifm_subtype_descriptions; desc->ifmt_string != NULL; 81 desc++) { 82 if (IFM_TYPE_MATCH(desc->ifmt_word, mword) && 83 IFM_SUBTYPE(desc->ifmt_word) == IFM_SUBTYPE(mword)) 84 return desc->ifmt_string; 85 } 86 return "<unknown subtype>"; 87 } 88 89 const char * 90 get_media_mode_string(int mword) 91 { 92 struct ifmedia_description *desc; 93 94 for (desc = ifm_mode_descriptions; desc->ifmt_string != NULL; desc++) { 95 if (IFM_TYPE_MATCH(desc->ifmt_word, mword) && 96 IFM_MODE(mword) == IFM_MODE(desc->ifmt_word)) 97 return desc->ifmt_string; 98 } 99 return NULL; 100 } 101 102 const char * 103 get_media_option_string(int *mwordp) 104 { 105 struct ifmedia_description *desc; 106 int mword = *mwordp; 107 108 for (desc = ifm_option_descriptions; desc->ifmt_string != NULL; 109 desc++) { 110 if (!IFM_TYPE_MATCH(desc->ifmt_word, mword)) 111 continue; 112 if (mword & IFM_OPTIONS(desc->ifmt_word)) { 113 *mwordp = mword & ~IFM_OPTIONS(desc->ifmt_word); 114 return desc->ifmt_string; 115 } 116 } 117 118 /* Historical behaviour is to ignore unknown option bits! */ 119 *mwordp = mword & ~IFM_OPTIONS(~0); 120 return NULL; 121 } 122 123 int 124 lookup_media_word(struct ifmedia_description *desc, int type, const char *val) 125 { 126 127 for (; desc->ifmt_string != NULL; desc++) { 128 if (IFM_TYPE_MATCH(desc->ifmt_word, type) && 129 strcasecmp(desc->ifmt_string, val) == 0) 130 return (desc->ifmt_word); 131 } 132 return -1; 133 } 134 135 int 136 get_media_mode(int type, const char *val) 137 { 138 139 return lookup_media_word(ifm_mode_descriptions, type, val); 140 } 141 142 int 143 get_media_subtype(int type, const char *val) 144 { 145 146 return lookup_media_word(ifm_subtype_descriptions, type, val); 147 } 148 149 int 150 get_media_options(int type, const char *val, char **invalid) 151 { 152 char *optlist, *str; 153 int option, rval = 0; 154 155 /* We muck with the string, so copy it. */ 156 optlist = strdup(val); 157 if (optlist == NULL) { 158 if (invalid != NULL) 159 *invalid = NULL; 160 return -1; 161 } 162 str = optlist; 163 164 /* 165 * Look up the options in the user-provided comma-separated list. 166 */ 167 type = IFM_TYPE(type); 168 for (; (str = strtok(str, ",")) != NULL; str = NULL) { 169 option = lookup_media_word(ifm_option_descriptions, type, str); 170 if (option != -1) { 171 rval |= IFM_OPTIONS(option); 172 continue; 173 } 174 rval = -1; 175 if (invalid == NULL) 176 break; 177 /* Pass invalid option at start of malloced buffer */ 178 if (str != optlist) 179 memmove(optlist, str, strlen(str) + 1); 180 /* Caller should free() or exit() */ 181 *invalid = optlist; 182 return rval; 183 } 184 185 free(optlist); 186 return (rval); 187 } 188
Indexes created Tue Sep 23 14:10:03 GMT 2025