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 static const char proto_qinq[] = "qinq"; 72 73 static struct vlanreq params = { 74 .vlr_tag = NOTAG, 75 .vlr_proto = ETHERTYPE_VLAN, 76 }; 77 78 static int 79 getvlan(int s, struct ifreq *ifr, struct vlanreq *vreq) 80 { 81 bzero((char *)vreq, sizeof(*vreq)); 82 ifr->ifr_data = (caddr_t)vreq; 83 84 return ioctl(s, SIOCGETVLAN, (caddr_t)ifr); 85 } 86 87 static void 88 vlan_status(int s) 89 { 90 struct vlanreq vreq; 91 92 if (getvlan(s, &ifr, &vreq) == -1) 93 return; 94 printf("\tvlan: %d", vreq.vlr_tag); 95 printf(" vlanproto: "); 96 switch (vreq.vlr_proto) { 97 case ETHERTYPE_VLAN: 98 printf(proto_8021Q); 99 break; 100 case ETHERTYPE_QINQ: 101 printf(proto_8021ad); 102 break; 103 default: 104 printf("0x%04x", vreq.vlr_proto); 105 } 106 if (ioctl(s, SIOCGVLANPCP, (caddr_t)&ifr) != -1) 107 printf(" vlanpcp: %u", ifr.ifr_vlan_pcp); 108 printf(" parent interface: %s", vreq.vlr_parent[0] == '\0' ? 109 "<none>" : vreq.vlr_parent); 110 printf("\n"); 111 } 112 113 static int 114 vlan_match_ethervid(const char *name) 115 { 116 return (strchr(name, '.') != NULL); 117 } 118 119 static void 120 vlan_parse_ethervid(const char *name) 121 { 122 char ifname[IFNAMSIZ]; 123 char *cp; 124 int vid; 125 126 strlcpy(ifname, name, IFNAMSIZ); 127 if ((cp = strrchr(ifname, '.')) == NULL) 128 return; 129 /* 130 * Derive params from interface name: "parent.vid". 131 */ 132 *cp++ = '\0'; 133 if ((*cp < '1') || (*cp > '9')) 134 errx(1, "invalid vlan tag"); 135 136 vid = *cp++ - '0'; 137 while ((*cp >= '0') && (*cp <= '9')) 138 vid = (vid * 10) + (*cp++ - '0'); 139 if ((*cp != '\0') || (vid & ~0xFFF)) 140 errx(1, "invalid vlan tag"); 141 142 /* 143 * allow "devX.Y vlandev devX vlan Y" syntax 144 */ 145 if (params.vlr_tag == NOTAG || params.vlr_tag == vid) 146 params.vlr_tag = vid; 147 else 148 errx(1, "ambiguous vlan specification"); 149 150 /* Restrict overriding interface name */ 151 if (params.vlr_parent[0] == '\0' || !strcmp(params.vlr_parent, ifname)) 152 strlcpy(params.vlr_parent, ifname, IFNAMSIZ); 153 else 154 errx(1, "ambiguous vlan specification"); 155 } 156 157 static void 158 vlan_create(int s, struct ifreq *ifr) 159 { 160 vlan_parse_ethervid(ifr->ifr_name); 161 162 if (params.vlr_tag != NOTAG || params.vlr_parent[0] != '\0') { 163 /* 164 * One or both parameters were specified, make sure both. 165 */ 166 if (params.vlr_tag == NOTAG) 167 errx(1, "must specify a tag for vlan create"); 168 if (params.vlr_parent[0] == '\0') 169 errx(1, "must specify a parent device for vlan create"); 170 ifr->ifr_data = (caddr_t) ¶ms; 171 } 172 ioctl_ifcreate(s, ifr); 173 } 174 175 static void 176 vlan_cb(int s, void *arg) 177 { 178 if ((params.vlr_tag != NOTAG) ^ (params.vlr_parent[0] != '\0')) 179 errx(1, "both vlan and vlandev must be specified"); 180 } 181 182 static void 183 vlan_set(int s, struct ifreq *ifr) 184 { 185 if (params.vlr_tag != NOTAG && params.vlr_parent[0] != '\0') { 186 ifr->ifr_data = (caddr_t) ¶ms; 187 if (ioctl(s, SIOCSETVLAN, (caddr_t)ifr) == -1) 188 err(1, "SIOCSETVLAN"); 189 } 190 } 191 192 static 193 DECL_CMD_FUNC(setvlantag, val, d) 194 { 195 struct vlanreq vreq; 196 u_long ul; 197 char *endp; 198 199 ul = strtoul(val, &endp, 0); 200 if (*endp != '\0') 201 errx(1, "invalid value for vlan"); 202 params.vlr_tag = ul; 203 /* check if the value can be represented in vlr_tag */ 204 if (params.vlr_tag != ul) 205 errx(1, "value for vlan out of range"); 206 207 if (getvlan(s, &ifr, &vreq) != -1) 208 vlan_set(s, &ifr); 209 } 210 211 static 212 DECL_CMD_FUNC(setvlandev, val, d) 213 { 214 struct vlanreq vreq; 215 216 strlcpy(params.vlr_parent, val, sizeof(params.vlr_parent)); 217 218 if (getvlan(s, &ifr, &vreq) != -1) 219 vlan_set(s, &ifr); 220 } 221 222 static 223 DECL_CMD_FUNC(setvlanproto, val, d) 224 { 225 struct vlanreq vreq; 226 227 if (strncasecmp(proto_8021Q, val, 228 strlen(proto_8021Q)) == 0) { 229 params.vlr_proto = ETHERTYPE_VLAN; 230 } else if ((strncasecmp(proto_8021ad, val, strlen(proto_8021ad)) == 0) 231 || (strncasecmp(proto_qinq, val, strlen(proto_qinq)) == 0)) { 232 params.vlr_proto = ETHERTYPE_QINQ; 233 } else 234 errx(1, "invalid value for vlanproto"); 235 236 if (getvlan(s, &ifr, &vreq) != -1) 237 vlan_set(s, &ifr); 238 } 239 240 static 241 DECL_CMD_FUNC(setvlanpcp, val, d) 242 { 243 u_long ul; 244 char *endp; 245 246 ul = strtoul(val, &endp, 0); 247 if (*endp != '\0') 248 errx(1, "invalid value for vlanpcp"); 249 if (ul > 7) 250 errx(1, "value for vlanpcp out of range"); 251 ifr.ifr_vlan_pcp = ul; 252 if (ioctl(s, SIOCSVLANPCP, (caddr_t)&ifr) == -1) 253 err(1, "SIOCSVLANPCP"); 254 } 255 256 static 257 DECL_CMD_FUNC(unsetvlandev, val, d) 258 { 259 struct vlanreq vreq; 260 261 bzero((char *)&vreq, sizeof(struct vlanreq)); 262 ifr.ifr_data = (caddr_t)&vreq; 263 264 if (ioctl(s, SIOCGETVLAN, (caddr_t)&ifr) == -1) 265 err(1, "SIOCGETVLAN"); 266 267 bzero((char *)&vreq.vlr_parent, sizeof(vreq.vlr_parent)); 268 vreq.vlr_tag = 0; 269 270 if (ioctl(s, SIOCSETVLAN, (caddr_t)&ifr) == -1) 271 err(1, "SIOCSETVLAN"); 272 } 273 274 static struct cmd vlan_cmds[] = { 275 DEF_CLONE_CMD_ARG("vlan", setvlantag), 276 DEF_CLONE_CMD_ARG("vlandev", setvlandev), 277 DEF_CLONE_CMD_ARG("vlanproto", setvlanproto), 278 DEF_CMD_ARG("vlanpcp", setvlanpcp), 279 /* NB: non-clone cmds */ 280 DEF_CMD_ARG("vlan", setvlantag), 281 DEF_CMD_ARG("vlandev", setvlandev), 282 DEF_CMD_ARG("vlanproto", setvlanproto), 283 /* XXX For compatibility. Should become DEF_CMD() some day. */ 284 DEF_CMD_OPTARG("-vlandev", unsetvlandev), 285 DEF_CMD("vlanmtu", IFCAP_VLAN_MTU, setifcap), 286 DEF_CMD("-vlanmtu", -IFCAP_VLAN_MTU, setifcap), 287 DEF_CMD("vlanhwtag", IFCAP_VLAN_HWTAGGING, setifcap), 288 DEF_CMD("-vlanhwtag", -IFCAP_VLAN_HWTAGGING, setifcap), 289 DEF_CMD("vlanhwfilter", IFCAP_VLAN_HWFILTER, setifcap), 290 DEF_CMD("-vlanhwfilter", -IFCAP_VLAN_HWFILTER, setifcap), 291 DEF_CMD("-vlanhwtso", -IFCAP_VLAN_HWTSO, setifcap), 292 DEF_CMD("vlanhwtso", IFCAP_VLAN_HWTSO, setifcap), 293 DEF_CMD("vlanhwcsum", IFCAP_VLAN_HWCSUM, setifcap), 294 DEF_CMD("-vlanhwcsum", -IFCAP_VLAN_HWCSUM, setifcap), 295 }; 296 static struct afswtch af_vlan = { 297 .af_name = "af_vlan", 298 .af_af = AF_UNSPEC, 299 .af_other_status = vlan_status, 300 }; 301 302 static __constructor void 303 vlan_ctor(void) 304 { 305 size_t i; 306 307 for (i = 0; i < nitems(vlan_cmds); i++) 308 cmd_register(&vlan_cmds[i]); 309 af_register(&af_vlan); 310 callback_register(vlan_cb, NULL); 311 clone_setdefcallback_prefix("vlan", vlan_create); 312 clone_setdefcallback_filter(vlan_match_ethervid, vlan_create); 313 } 314