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 vlan_set(int); 66 67 static void 68 vlan_status(int s) 69 { 70 struct vlanreq vreq; 71 72 bzero((char *)&vreq, sizeof(vreq)); 73 ifr.ifr_data = (caddr_t)&vreq; 74 75 if (ioctl(s, SIOCGETVLAN, (caddr_t)&ifr) == -1) 76 return; 77 78 printf("\tvlan: %d parent interface: %s\n", 79 vreq.vlr_tag, vreq.vlr_parent[0] == '\0' ? 80 "<none>" : vreq.vlr_parent); 81 } 82 83 static void 84 setvlantag(const char *val, int d, int s, const struct afswtch *afp) 85 { 86 char *endp; 87 u_long ul; 88 89 ul = strtoul(val, &endp, 0); 90 if (*endp != '\0') 91 errx(1, "invalid value for vlan"); 92 __vreq.vlr_tag = ul; 93 /* check if the value can be represented in vlr_tag */ 94 if (__vreq.vlr_tag != ul) 95 errx(1, "value for vlan out of range"); 96 /* the kernel will do more specific checks on vlr_tag */ 97 __have_tag = 1; 98 vlan_set(s); /* try setting vlan params in kernel */ 99 } 100 101 static void 102 setvlandev(const char *val, int d, int s, const struct afswtch *afp) 103 { 104 105 strncpy(__vreq.vlr_parent, val, sizeof(__vreq.vlr_parent)); 106 __have_dev = 1; 107 vlan_set(s); /* try setting vlan params in kernel */ 108 } 109 110 static void 111 unsetvlandev(const char *val, int d, int s, const struct afswtch *afp) 112 { 113 114 if (val != NULL) 115 warnx("argument to -vlandev is useless and hence deprecated"); 116 117 bzero((char *)&__vreq, sizeof(__vreq)); 118 ifr.ifr_data = (caddr_t)&__vreq; 119 #if 0 /* this code will be of use when we can alter vlan or vlandev only */ 120 if (ioctl(s, SIOCGETVLAN, (caddr_t)&ifr) == -1) 121 err(1, "SIOCGETVLAN"); 122 123 bzero((char *)&__vreq.vlr_parent, sizeof(__vreq.vlr_parent)); 124 __vreq.vlr_tag = 0; /* XXX clear parent only (no kernel support now) */ 125 #endif 126 if (ioctl(s, SIOCSETVLAN, (caddr_t)&ifr) == -1) 127 err(1, "SIOCSETVLAN"); 128 __have_dev = __have_tag = 0; 129 } 130 131 static void 132 vlan_cb(int s, void *arg) 133 { 134 135 if (__have_tag ^ __have_dev) 136 errx(1, "both vlan and vlandev must be specified"); 137 } 138 139 static void 140 vlan_set(int s) 141 { 142 143 if (__have_tag && __have_dev) { 144 ifr.ifr_data = (caddr_t)&__vreq; 145 if (ioctl(s, SIOCSETVLAN, (caddr_t)&ifr) == -1) 146 err(1, "SIOCSETVLAN"); 147 } 148 } 149 150 static struct cmd vlan_cmds[] = { 151 DEF_CMD_ARG("vlan", setvlantag), 152 DEF_CMD_ARG("vlandev", setvlandev), 153 /* XXX For compatibility. Should become DEF_CMD() some day. */ 154 DEF_CMD_OPTARG("-vlandev", unsetvlandev), 155 DEF_CMD("vlanmtu", IFCAP_VLAN_MTU, setifcap), 156 DEF_CMD("-vlanmtu", -IFCAP_VLAN_MTU, setifcap), 157 DEF_CMD("vlanhwtag", IFCAP_VLAN_HWTAGGING, setifcap), 158 DEF_CMD("-vlanhwtag", -IFCAP_VLAN_HWTAGGING, setifcap), 159 }; 160 static struct afswtch af_vlan = { 161 .af_name = "af_vlan", 162 .af_af = AF_UNSPEC, 163 .af_other_status = vlan_status, 164 }; 165 166 static __constructor void 167 vlan_ctor(void) 168 { 169 #define N(a) (sizeof(a) / sizeof(a[0])) 170 int i; 171 172 for (i = 0; i < N(vlan_cmds); i++) 173 cmd_register(&vlan_cmds[i]); 174 af_register(&af_vlan); 175 callback_register(vlan_cb, NULL); 176 #undef N 177 } 178