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_vlan_var.h> 44 #include <net/route.h> 45 46 #include <ctype.h> 47 #include <stdio.h> 48 #include <string.h> 49 #include <stdlib.h> 50 #include <unistd.h> 51 #include <err.h> 52 #include <errno.h> 53 54 #include "ifconfig.h" 55 56 #ifndef lint 57 static const char rcsid[] = 58 "$FreeBSD$"; 59 #endif 60 61 #define NOTAG ((u_short) -1) 62 63 static struct vlanreq params = { 64 .vlr_tag = NOTAG, 65 }; 66 67 static int 68 getvlan(int s, struct ifreq *ifr, struct vlanreq *vreq) 69 { 70 bzero((char *)vreq, sizeof(*vreq)); 71 ifr->ifr_data = (caddr_t)vreq; 72 73 return ioctl(s, SIOCGETVLAN, (caddr_t)ifr); 74 } 75 76 static void 77 vlan_status(int s) 78 { 79 struct vlanreq vreq; 80 81 if (getvlan(s, &ifr, &vreq) != -1) 82 printf("\tvlan: %d parent interface: %s\n", 83 vreq.vlr_tag, vreq.vlr_parent[0] == '\0' ? 84 "<none>" : vreq.vlr_parent); 85 } 86 87 static void 88 vlan_create(int s, struct ifreq *ifr) 89 { 90 if (params.vlr_tag != NOTAG || params.vlr_parent[0] != '\0') { 91 /* 92 * One or both parameters were specified, make sure both. 93 */ 94 if (params.vlr_tag == NOTAG) 95 errx(1, "must specify a tag for vlan create"); 96 if (params.vlr_parent[0] == '\0') 97 errx(1, "must specify a parent device for vlan create"); 98 ifr->ifr_data = (caddr_t) ¶ms; 99 } 100 if (ioctl(s, SIOCIFCREATE2, ifr) < 0) 101 err(1, "SIOCIFCREATE2"); 102 } 103 104 static void 105 vlan_cb(int s, void *arg) 106 { 107 if ((params.vlr_tag != NOTAG) ^ (params.vlr_parent[0] != '\0')) 108 errx(1, "both vlan and vlandev must be specified"); 109 } 110 111 static void 112 vlan_set(int s, struct ifreq *ifr) 113 { 114 if (params.vlr_tag != NOTAG && params.vlr_parent[0] != '\0') { 115 ifr->ifr_data = (caddr_t) ¶ms; 116 if (ioctl(s, SIOCSETVLAN, (caddr_t)ifr) == -1) 117 err(1, "SIOCSETVLAN"); 118 } 119 } 120 121 static 122 DECL_CMD_FUNC(setvlantag, val, d) 123 { 124 struct vlanreq vreq; 125 u_long ul; 126 char *endp; 127 128 ul = strtoul(val, &endp, 0); 129 if (*endp != '\0') 130 errx(1, "invalid value for vlan"); 131 params.vlr_tag = ul; 132 /* check if the value can be represented in vlr_tag */ 133 if (params.vlr_tag != ul) 134 errx(1, "value for vlan out of range"); 135 136 if (getvlan(s, &ifr, &vreq) != -1) 137 vlan_set(s, &ifr); 138 } 139 140 static 141 DECL_CMD_FUNC(setvlandev, val, d) 142 { 143 struct vlanreq vreq; 144 145 strlcpy(params.vlr_parent, val, sizeof(params.vlr_parent)); 146 147 if (getvlan(s, &ifr, &vreq) != -1) 148 vlan_set(s, &ifr); 149 } 150 151 static 152 DECL_CMD_FUNC(unsetvlandev, val, d) 153 { 154 struct vlanreq vreq; 155 156 bzero((char *)&vreq, sizeof(struct vlanreq)); 157 ifr.ifr_data = (caddr_t)&vreq; 158 159 if (ioctl(s, SIOCGETVLAN, (caddr_t)&ifr) == -1) 160 err(1, "SIOCGETVLAN"); 161 162 bzero((char *)&vreq.vlr_parent, sizeof(vreq.vlr_parent)); 163 vreq.vlr_tag = 0; 164 165 if (ioctl(s, SIOCSETVLAN, (caddr_t)&ifr) == -1) 166 err(1, "SIOCSETVLAN"); 167 } 168 169 static struct cmd vlan_cmds[] = { 170 DEF_CLONE_CMD_ARG("vlan", setvlantag), 171 DEF_CLONE_CMD_ARG("vlandev", setvlandev), 172 /* NB: non-clone cmds */ 173 DEF_CMD_ARG("vlan", setvlantag), 174 DEF_CMD_ARG("vlandev", setvlandev), 175 /* XXX For compatibility. Should become DEF_CMD() some day. */ 176 DEF_CMD_OPTARG("-vlandev", unsetvlandev), 177 DEF_CMD("vlanmtu", IFCAP_VLAN_MTU, setifcap), 178 DEF_CMD("-vlanmtu", -IFCAP_VLAN_MTU, setifcap), 179 DEF_CMD("vlanhwtag", IFCAP_VLAN_HWTAGGING, setifcap), 180 DEF_CMD("-vlanhwtag", -IFCAP_VLAN_HWTAGGING, setifcap), 181 DEF_CMD("vlanhwfilter", IFCAP_VLAN_HWFILTER, setifcap), 182 DEF_CMD("-vlanhwfilter", -IFCAP_VLAN_HWFILTER, setifcap), 183 DEF_CMD("-vlanhwtso", -IFCAP_VLAN_HWTSO, setifcap), 184 DEF_CMD("vlanhwtso", IFCAP_VLAN_HWTSO, setifcap), 185 DEF_CMD("vlanhwcsum", IFCAP_VLAN_HWCSUM, setifcap), 186 DEF_CMD("-vlanhwcsum", -IFCAP_VLAN_HWCSUM, setifcap), 187 }; 188 static struct afswtch af_vlan = { 189 .af_name = "af_vlan", 190 .af_af = AF_UNSPEC, 191 .af_other_status = vlan_status, 192 }; 193 194 static __constructor void 195 vlan_ctor(void) 196 { 197 #define N(a) (sizeof(a) / sizeof(a[0])) 198 size_t i; 199 200 for (i = 0; i < N(vlan_cmds); i++) 201 cmd_register(&vlan_cmds[i]); 202 af_register(&af_vlan); 203 callback_register(vlan_cb, NULL); 204 clone_setdefcallback("vlan", vlan_create); 205 #undef N 206 } 207