vlan.c revision 1.10
1 /* $NetBSD: vlan.c,v 1.10 2008/07/02 07:44:15 dyoung Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 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 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __RCSID("$NetBSD: vlan.c,v 1.10 2008/07/02 07:44:15 dyoung Exp $"); 35 #endif /* not lint */ 36 37 #include <sys/param.h> 38 #include <sys/ioctl.h> 39 40 #include <net/if.h> 41 #include <net/if_ether.h> 42 #include <net/if_vlanvar.h> 43 44 #include <ctype.h> 45 #include <err.h> 46 #include <errno.h> 47 #include <string.h> 48 #include <stdlib.h> 49 #include <stdio.h> 50 #include <util.h> 51 52 #include "env.h" 53 #include "extern.h" 54 #include "util.h" 55 56 static status_func_t status; 57 static cmdloop_branch_t branch; 58 59 static void vlan_constructor(void) __attribute__((constructor)); 60 static void vlan_status(prop_dictionary_t, prop_dictionary_t); 61 62 static int setvlan(prop_dictionary_t, prop_dictionary_t); 63 static int setvlanif(prop_dictionary_t, prop_dictionary_t); 64 65 struct pinteger vlantag = PINTEGER_INITIALIZER1(&vlantag, "VLAN tag", 66 0, USHRT_MAX, 10, setvlan, "vlantag", &command_root.pb_parser); 67 68 struct piface vlanif = PIFACE_INITIALIZER(&vlanif, "vlanif", setvlanif, 69 "vlanif", &command_root.pb_parser); 70 71 static const struct kwinst vlankw[] = { 72 {.k_word = "vlan", .k_nextparser = &vlantag.pi_parser} 73 , {.k_word = "vlanif", .k_act = "vlantag", 74 .k_nextparser = &vlanif.pif_parser} 75 , {.k_word = "-vlanif", .k_key = "vlanif", .k_type = KW_T_STR, 76 .k_str = "", .k_exec = setvlanif} 77 }; 78 79 struct pkw vlan = PKW_INITIALIZER(&vlan, "vlan", NULL, NULL, 80 vlankw, __arraycount(vlankw), NULL); 81 82 static int 83 checkifname(prop_dictionary_t env) 84 { 85 const char *ifname; 86 87 if ((ifname = getifname(env)) == NULL) 88 return 1; 89 90 return strncmp(ifname, "vlan", 4) != 0 || 91 !isdigit((unsigned char)ifname[4]); 92 } 93 94 static int 95 getvlan(prop_dictionary_t env, struct vlanreq *vlr, bool quiet) 96 { 97 memset(vlr, 0, sizeof(*vlr)); 98 99 if (checkifname(env)) { 100 if (quiet) 101 return -1; 102 errx(EXIT_FAILURE, "valid only with vlan(4) interfaces"); 103 } 104 105 if (indirect_ioctl(env, SIOCGETVLAN, vlr) == -1) 106 return -1; 107 108 return 0; 109 } 110 111 int 112 setvlan(prop_dictionary_t env, prop_dictionary_t xenv) 113 { 114 struct vlanreq vlr; 115 int64_t tag; 116 117 if (getvlan(env, &vlr, false) == -1) 118 err(EXIT_FAILURE, "%s: getvlan", __func__); 119 120 if (!prop_dictionary_get_int64(env, "vlantag", &tag)) { 121 errno = ENOENT; 122 return -1; 123 } 124 125 vlr.vlr_tag = tag; 126 127 if (indirect_ioctl(env, SIOCSETVLAN, &vlr) == -1) 128 err(EXIT_FAILURE, "SIOCSETVLAN"); 129 return 0; 130 } 131 132 int 133 setvlanif(prop_dictionary_t env, prop_dictionary_t xenv) 134 { 135 struct vlanreq vlr; 136 const char *parent; 137 int64_t tag; 138 139 if (getvlan(env, &vlr, false) == -1) 140 err(EXIT_FAILURE, "%s: getsock", __func__); 141 142 if (!prop_dictionary_get_int64(env, "vlantag", &tag)) { 143 errno = ENOENT; 144 return -1; 145 } 146 147 if (!prop_dictionary_get_cstring_nocopy(env, "vlanif", &parent)) { 148 errno = ENOENT; 149 return -1; 150 } 151 strlcpy(vlr.vlr_parent, parent, sizeof(vlr.vlr_parent)); 152 if (strcmp(parent, "") != 0) 153 vlr.vlr_tag = (unsigned short)tag; 154 155 if (indirect_ioctl(env, SIOCSETVLAN, &vlr) == -1) 156 err(EXIT_FAILURE, "SIOCSETVLAN"); 157 return 0; 158 } 159 160 static void 161 vlan_status(prop_dictionary_t env, prop_dictionary_t oenv) 162 { 163 struct vlanreq vlr; 164 165 if (getvlan(env, &vlr, true) == -1) 166 return; 167 168 if (vlr.vlr_tag || vlr.vlr_parent[0] != '\0') 169 printf("\tvlan: %d parent: %s\n", 170 vlr.vlr_tag, vlr.vlr_parent[0] == '\0' ? 171 "<none>" : vlr.vlr_parent); 172 } 173 174 static void 175 vlan_constructor(void) 176 { 177 cmdloop_branch_init(&branch, &vlan.pk_parser); 178 register_cmdloop_branch(&branch); 179 status_func_init(&status, vlan_status); 180 register_status(&status); 181 } 182
Indexes created Mon Sep 29 18:09:42 GMT 2025