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