1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1999 Bill Paul <wpaul@ctr.columbia.edu> 5 * Copyright (c) 2012 ADARA Networks, Inc. 6 * All rights reserved. 7 * 8 * Portions of this software were developed by Robert N. M. Watson under 9 * contract to ADARA Networks, Inc. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by Bill Paul. 22 * 4. Neither the name of the author nor the names of any co-contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 36 * THE POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/param.h> 40 #include <sys/ioctl.h> 41 #include <sys/socket.h> 42 #include <sys/sockio.h> 43 44 #include <stdlib.h> 45 #include <unistd.h> 46 47 #include <net/ethernet.h> 48 #include <net/if.h> 49 #include <net/if_vlan_var.h> 50 #include <net/route.h> 51 52 #include <ctype.h> 53 #include <stdio.h> 54 #include <string.h> 55 #include <stdlib.h> 56 #include <unistd.h> 57 #include <err.h> 58 #include <errno.h> 59 60 #include "ifconfig.h" 61 62 #ifndef lint 63 static const char rcsid[] = 64 "$FreeBSD$"; 65 #endif 66 67 #define NOTAG ((u_short) -1) 68 69 static const char proto_8021Q[] = "802.1q"; 70 static const char proto_8021ad[] = "802.1ad"; 71 72 static struct vlanreq params = { 73 .vlr_tag = NOTAG, 74 .vlr_proto = ETHERTYPE_VLAN, 75 }; 76 77 static int 78 getvlan(int s, struct ifreq *ifr, struct vlanreq *vreq) 79 { 80 bzero((char *)vreq, sizeof(*vreq)); 81 ifr->ifr_data = (caddr_t)vreq; 82 83 return ioctl(s, SIOCGETVLAN, (caddr_t)ifr); 84 } 85 86 static void 87 vlan_status(int s) 88 { 89 struct vlanreq vreq; 90 91 if (getvlan(s, &ifr, &vreq) == -1) 92 return; 93 printf("\tvlan: %d", vreq.vlr_tag); 94 printf(" vlanproto: "); 95 switch (vreq.vlr_proto) { 96 case ETHERTYPE_VLAN: 97 printf(proto_8021Q); 98 break; 99 case ETHERTYPE_QINQ: 100 printf(proto_8021ad); 101 break; 102 default: 103 printf("0x%04x", vreq.vlr_proto); 104 } 105 if (ioctl(s, SIOCGVLANPCP, (caddr_t)&ifr) != -1) 106 printf(" vlanpcp: %u", ifr.ifr_vlan_pcp); 107 printf(" parent interface: %s", vreq.vlr_parent[0] == '\0' ? 108 "<none>" : vreq.vlr_parent); 109 printf("\n"); 110 } 111 112 static int 113 vlan_match_ethervid(const char *name) 114 { 115 return (strchr(name, '.') != NULL); 116 } 117 118 static void 119 vlan_parse_ethervid(const char *name) 120 { 121 char ifname[IFNAMSIZ]; 122 char *cp; 123 int vid; 124 125 strlcpy(ifname, name, IFNAMSIZ); 126 if ((cp = strrchr(ifname, '.')) == NULL) 127 return; 128 /* 129 * Don't mix vlan/vlandev parameters with dot notation. 130 */ 131 if (params.vlr_tag != NOTAG || params.vlr_parent[0] != '\0') 132 errx(1, "ambiguous vlan specification"); 133 /* 134 * Derive params from interface name: "parent.vid". 135 */ 136 *cp++ = '\0'; 137 if ((*cp < '1') || (*cp > '9')) 138 errx(1, "invalid vlan tag"); 139 140 vid = *cp++ - '0'; 141 while ((*cp >= '0') && (*cp <= '9')) 142 vid = (vid * 10) + (*cp++ - '0'); 143 if ((*cp != '\0') || (vid & ~0xFFF)) 144 errx(1, "invalid vlan tag"); 145 146 strlcpy(params.vlr_parent, ifname, IFNAMSIZ); 147 params.vlr_tag = (vid & 0xFFF); 148 } 149 150 static void 151 vlan_create(int s, struct ifreq *ifr) 152 { 153 vlan_parse_ethervid(ifr->ifr_name); 154 155 if (params.vlr_tag != NOTAG || params.vlr_parent[0] != '\0') { 156 /* 157 * One or both parameters were specified, make sure both. 158 */ 159 if (params.vlr_tag == NOTAG) 160 errx(1, "must specify a tag for vlan create"); 161 if (params.vlr_parent[0] == '\0') 162 errx(1, "must specify a parent device for vlan create"); 163 ifr->ifr_data = (caddr_t) ¶ms; 164 } 165 if (ioctl(s, SIOCIFCREATE2, ifr) < 0) 166 err(1, "SIOCIFCREATE2"); 167 } 168 169 static void 170 vlan_cb(int s, void *arg) 171 { 172 if ((params.vlr_tag != NOTAG) ^ (params.vlr_parent[0] != '\0')) 173 errx(1, "both vlan and vlandev must be specified"); 174 } 175 176 static void 177 vlan_set(int s, struct ifreq *ifr) 178 { 179 if (params.vlr_tag != NOTAG && params.vlr_parent[0] != '\0') { 180 ifr->ifr_data = (caddr_t) ¶ms; 181 if (ioctl(s, SIOCSETVLAN, (caddr_t)ifr) == -1) 182 err(1, "SIOCSETVLAN"); 183 } 184 } 185 186 static 187 DECL_CMD_FUNC(setvlantag, val, d) 188 { 189 struct vlanreq vreq; 190 u_long ul; 191 char *endp; 192 193 ul = strtoul(val, &endp, 0); 194 if (*endp != '\0') 195 errx(1, "invalid value for vlan"); 196 params.vlr_tag = ul; 197 /* check if the value can be represented in vlr_tag */ 198 if (params.vlr_tag != ul) 199 errx(1, "value for vlan out of range"); 200 201 if (getvlan(s, &ifr, &vreq) != -1) 202 vlan_set(s, &ifr); 203 } 204 205 static 206 DECL_CMD_FUNC(setvlandev, val, d) 207 { 208 struct vlanreq vreq; 209 210 strlcpy(params.vlr_parent, val, sizeof(params.vlr_parent)); 211 212 if (getvlan(s, &ifr, &vreq) != -1) 213 vlan_set(s, &ifr); 214 } 215 216 static 217 DECL_CMD_FUNC(setvlanproto, val, d) 218 { 219 struct vlanreq vreq; 220 221 if (strncasecmp(proto_8021Q, val, 222 strlen(proto_8021Q)) == 0) { 223 params.vlr_proto = ETHERTYPE_VLAN; 224 } else if (strncasecmp(proto_8021ad, val, 225 strlen(proto_8021ad)) == 0) { 226 params.vlr_proto = ETHERTYPE_QINQ; 227 } else 228 errx(1, "invalid value for vlanproto"); 229 230 if (getvlan(s, &ifr, &vreq) != -1) 231 vlan_set(s, &ifr); 232 } 233 234 static 235 DECL_CMD_FUNC(setvlanpcp, val, d) 236 { 237 u_long ul; 238 char *endp; 239 240 ul = strtoul(val, &endp, 0); 241 if (*endp != '\0') 242 errx(1, "invalid value for vlanpcp"); 243 if (ul > 7) 244 errx(1, "value for vlanpcp out of range"); 245 ifr.ifr_vlan_pcp = ul; 246 if (ioctl(s, SIOCSVLANPCP, (caddr_t)&ifr) == -1) 247 err(1, "SIOCSVLANPCP"); 248 } 249 250 static 251 DECL_CMD_FUNC(unsetvlandev, val, d) 252 { 253 struct vlanreq vreq; 254 255 bzero((char *)&vreq, sizeof(struct vlanreq)); 256 ifr.ifr_data = (caddr_t)&vreq; 257 258 if (ioctl(s, SIOCGETVLAN, (caddr_t)&ifr) == -1) 259 err(1, "SIOCGETVLAN"); 260 261 bzero((char *)&vreq.vlr_parent, sizeof(vreq.vlr_parent)); 262 vreq.vlr_tag = 0; 263 264 if (ioctl(s, SIOCSETVLAN, (caddr_t)&ifr) == -1) 265 err(1, "SIOCSETVLAN"); 266 } 267 268 static struct cmd vlan_cmds[] = { 269 DEF_CLONE_CMD_ARG("vlan", setvlantag), 270 DEF_CLONE_CMD_ARG("vlandev", setvlandev), 271 DEF_CLONE_CMD_ARG("vlanproto", setvlanproto), 272 DEF_CMD_ARG("vlanpcp", setvlanpcp), 273 /* NB: non-clone cmds */ 274 DEF_CMD_ARG("vlan", setvlantag), 275 DEF_CMD_ARG("vlandev", setvlandev), 276 DEF_CMD_ARG("vlanproto", setvlanproto), 277 /* XXX For compatibility. Should become DEF_CMD() some day. */ 278 DEF_CMD_OPTARG("-vlandev", unsetvlandev), 279 DEF_CMD("vlanmtu", IFCAP_VLAN_MTU, setifcap), 280 DEF_CMD("-vlanmtu", -IFCAP_VLAN_MTU, setifcap), 281 DEF_CMD("vlanhwtag", IFCAP_VLAN_HWTAGGING, setifcap), 282 DEF_CMD("-vlanhwtag", -IFCAP_VLAN_HWTAGGING, setifcap), 283 DEF_CMD("vlanhwfilter", IFCAP_VLAN_HWFILTER, setifcap), 284 DEF_CMD("-vlanhwfilter", -IFCAP_VLAN_HWFILTER, setifcap), 285 DEF_CMD("-vlanhwtso", -IFCAP_VLAN_HWTSO, setifcap), 286 DEF_CMD("vlanhwtso", IFCAP_VLAN_HWTSO, setifcap), 287 DEF_CMD("vlanhwcsum", IFCAP_VLAN_HWCSUM, setifcap), 288 DEF_CMD("-vlanhwcsum", -IFCAP_VLAN_HWCSUM, setifcap), 289 }; 290 static struct afswtch af_vlan = { 291 .af_name = "af_vlan", 292 .af_af = AF_UNSPEC, 293 .af_other_status = vlan_status, 294 }; 295 296 static __constructor void 297 vlan_ctor(void) 298 { 299 size_t i; 300 301 for (i = 0; i < nitems(vlan_cmds); i++) 302 cmd_register(&vlan_cmds[i]); 303 af_register(&af_vlan); 304 callback_register(vlan_cb, NULL); 305 clone_setdefcallback_prefix("vlan", vlan_create); 306 clone_setdefcallback_filter(vlan_match_ethervid, vlan_create); 307 } 308