1 /* 2 * Copyright (c) 1999 3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Bill Paul. 16 * 4. Neither the name of the author nor the names of any co-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 Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD 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 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/param.h> 34 #include <sys/ioctl.h> 35 #include <sys/socket.h> 36 #include <sys/sockio.h> 37 38 #include <stdlib.h> 39 #include <unistd.h> 40 41 #include <net/ethernet.h> 42 #include <net/if.h> 43 #include <net/if_var.h> 44 #include <net/if_vlan_var.h> 45 #include <net/route.h> 46 47 #include <ctype.h> 48 #include <stdio.h> 49 #include <string.h> 50 #include <stdlib.h> 51 #include <unistd.h> 52 #include <err.h> 53 #include <errno.h> 54 55 #include "ifconfig.h" 56 57 #ifndef lint 58 static const char rcsid[] = 59 "$FreeBSD$"; 60 #endif 61 static struct vlanreq __vreq; 62 static int __have_dev = 0; 63 static int __have_tag = 0; 64 65 static void 66 vlan_status(int s) 67 { 68 struct vlanreq vreq; 69 70 bzero((char *)&vreq, sizeof(vreq)); 71 ifr.ifr_data = (caddr_t)&vreq; 72 73 if (ioctl(s, SIOCGETVLAN, (caddr_t)&ifr) == -1) 74 return; 75 76 printf("\tvlan: %d parent interface: %s\n", 77 vreq.vlr_tag, vreq.vlr_parent[0] == '\0' ? 78 "<none>" : vreq.vlr_parent); 79 } 80 81 static void 82 setvlantag(const char *val, int d, int s, const struct afswtch *afp) 83 { 84 char *endp; 85 u_long ul; 86 87 ul = strtoul(val, &endp, 0); 88 if (*endp != '\0') 89 errx(1, "invalid value for vlan"); 90 __vreq.vlr_tag = ul; 91 /* check if the value can be represented in vlr_tag */ 92 if (__vreq.vlr_tag != ul) 93 errx(1, "value for vlan out of range"); 94 /* the kernel will do more specific checks on vlr_tag */ 95 __have_tag = 1; 96 } 97 98 static void 99 setvlandev(const char *val, int d, int s, const struct afswtch *afp) 100 { 101 102 strncpy(__vreq.vlr_parent, val, sizeof(__vreq.vlr_parent)); 103 __have_dev = 1; 104 } 105 106 static void 107 unsetvlandev(const char *val, int d, int s, const struct afswtch *afp) 108 { 109 110 if (val != NULL) 111 warnx("argument to -vlandev is useless and hence deprecated"); 112 113 bzero((char *)&__vreq, sizeof(__vreq)); 114 ifr.ifr_data = (caddr_t)&__vreq; 115 #if 0 /* this code will be of use when we can alter vlan or vlandev only */ 116 if (ioctl(s, SIOCGETVLAN, (caddr_t)&ifr) == -1) 117 err(1, "SIOCGETVLAN"); 118 119 bzero((char *)&__vreq.vlr_parent, sizeof(__vreq.vlr_parent)); 120 __vreq.vlr_tag = 0; /* XXX clear parent only (no kernel support now) */ 121 #endif 122 if (ioctl(s, SIOCSETVLAN, (caddr_t)&ifr) == -1) 123 err(1, "SIOCSETVLAN"); 124 __have_dev = __have_tag = 0; 125 } 126 127 static void 128 vlan_cb(int s, void *arg) 129 { 130 131 if (__have_tag ^ __have_dev) 132 errx(1, "both vlan and vlandev must be specified"); 133 134 if (__have_tag && __have_dev) { 135 ifr.ifr_data = (caddr_t)&__vreq; 136 if (ioctl(s, SIOCSETVLAN, (caddr_t)&ifr) == -1) 137 err(1, "SIOCSETVLAN"); 138 } 139 } 140 141 static struct cmd vlan_cmds[] = { 142 DEF_CMD_ARG("vlan", setvlantag), 143 DEF_CMD_ARG("vlandev", setvlandev), 144 /* XXX For compatibility. Should become DEF_CMD() some day. */ 145 DEF_CMD_OPTARG("-vlandev", unsetvlandev), 146 DEF_CMD("vlanmtu", IFCAP_VLAN_MTU, setifcap), 147 DEF_CMD("-vlanmtu", -IFCAP_VLAN_MTU, setifcap), 148 DEF_CMD("vlanhwtag", IFCAP_VLAN_HWTAGGING, setifcap), 149 DEF_CMD("-vlanhwtag", -IFCAP_VLAN_HWTAGGING, setifcap), 150 }; 151 static struct afswtch af_vlan = { 152 .af_name = "af_vlan", 153 .af_af = AF_UNSPEC, 154 .af_other_status = vlan_status, 155 }; 156 157 static __constructor void 158 vlan_ctor(void) 159 { 160 #define N(a) (sizeof(a) / sizeof(a[0])) 161 int i; 162 163 for (i = 0; i < N(vlan_cmds); i++) 164 cmd_register(&vlan_cmds[i]); 165 af_register(&af_vlan); 166 callback_register(vlan_cb, NULL); 167 #undef N 168 } 169