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 63static const char rcsid[] = 64 "$FreeBSD$"; 65#endif 66 67#define NOTAG ((u_short) -1) 68 69static const char proto_8021Q[] = "802.1q"; 70static const char proto_8021ad[] = "802.1ad"; 71static const char proto_qinq[] = "qinq"; 72 73static struct vlanreq params = { 74 .vlr_tag = NOTAG, 75 .vlr_proto = ETHERTYPE_VLAN, 76}; 77 78static int 79getvlan(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 87static void 88vlan_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 113static int 114vlan_match_ethervid(const char *name) 115{ 116 return (strchr(name, '.') != NULL); 117} 118 119static void 120vlan_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 * Don't mix vlan/vlandev parameters with dot notation. 131 */ 132 if (params.vlr_tag != NOTAG || params.vlr_parent[0] != '\0') 133 errx(1, "ambiguous vlan specification"); 134 /* 135 * Derive params from interface name: "parent.vid". 136 */ 137 *cp++ = '\0'; 138 if ((*cp < '1') || (*cp > '9')) 139 errx(1, "invalid vlan tag"); 140 141 vid = *cp++ - '0'; 142 while ((*cp >= '0') && (*cp <= '9')) 143 vid = (vid * 10) + (*cp++ - '0'); 144 if ((*cp != '\0') || (vid & ~0xFFF)) 145 errx(1, "invalid vlan tag"); 146 147 strlcpy(params.vlr_parent, ifname, IFNAMSIZ); 148 params.vlr_tag = (vid & 0xFFF); 149} 150 151static void 152vlan_create(int s, struct ifreq *ifr) 153{ 154 vlan_parse_ethervid(ifr->ifr_name); 155 156 if (params.vlr_tag != NOTAG || params.vlr_parent[0] != '\0') { 157 /* 158 * One or both parameters were specified, make sure both. 159 */ 160 if (params.vlr_tag == NOTAG) 161 errx(1, "must specify a tag for vlan create"); 162 if (params.vlr_parent[0] == '\0') 163 errx(1, "must specify a parent device for vlan create"); 164 ifr->ifr_data = (caddr_t) ¶ms; 165 } 166 ioctl_ifcreate(s, ifr); 167} 168 169static void 170vlan_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 176static void 177vlan_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 186static 187DECL_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 205static 206DECL_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 216static 217DECL_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, strlen(proto_8021ad)) == 0) 225 || (strncasecmp(proto_qinq, val, strlen(proto_qinq)) == 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 234static 235DECL_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 250static 251DECL_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 268static 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}; 290static struct afswtch af_vlan = { 291 .af_name = "af_vlan", 292 .af_af = AF_UNSPEC, 293 .af_other_status = vlan_status, 294}; 295 296static __constructor void 297vlan_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