2 * SPDX-License-Identifier: BSD-4-Clause
4 * Copyright (c) 1999 Bill Paul <wpaul@ctr.columbia.edu>
5 * Copyright (c) 2012 ADARA Networks, Inc.
8 * Portions of this software were developed by Robert N. M. Watson under
9 * contract to ADARA Networks, Inc.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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.
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.
39 #include <sys/param.h>
40 #include <sys/ioctl.h>
41 #include <sys/socket.h>
42 #include <sys/sockio.h>
47 #include <net/ethernet.h>
49 #include <net/if_vlan_var.h>
50 #include <net/route.h>
63 static const char rcsid[] =
67 #define NOTAG ((u_short) -1)
69 static const char proto_8021Q[] = "802.1q";
70 static const char proto_8021ad[] = "802.1ad";
71 static const char proto_qinq[] = "qinq";
73 static struct vlanreq params = {
75 .vlr_proto = ETHERTYPE_VLAN,
79 getvlan(int s, struct ifreq *ifr, struct vlanreq *vreq)
81 bzero((char *)vreq, sizeof(*vreq));
82 ifr->ifr_data = (caddr_t)vreq;
84 return ioctl(s, SIOCGETVLAN, (caddr_t)ifr);
92 if (getvlan(s, &ifr, &vreq) == -1)
94 printf("\tvlan: %d", vreq.vlr_tag);
95 printf(" vlanproto: ");
96 switch (vreq.vlr_proto) {
101 printf(proto_8021ad);
104 printf("0x%04x", vreq.vlr_proto);
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);
114 vlan_match_ethervid(const char *name)
116 return (strchr(name, '.') != NULL);
120 vlan_parse_ethervid(const char *name)
122 char ifname[IFNAMSIZ];
126 strlcpy(ifname, name, IFNAMSIZ);
127 if ((cp = strrchr(ifname, '.')) == NULL)
130 * Derive params from interface name: "parent.vid".
133 if ((*cp < '1') || (*cp > '9'))
134 errx(1, "invalid vlan tag");
137 while ((*cp >= '0') && (*cp <= '9'))
138 vid = (vid * 10) + (*cp++ - '0');
139 if ((*cp != '\0') || (vid & ~0xFFF))
140 errx(1, "invalid vlan tag");
143 * allow "devX.Y vlandev devX vlan Y" syntax
145 if (params.vlr_tag == NOTAG || params.vlr_tag == vid)
146 params.vlr_tag = vid;
148 errx(1, "ambiguous vlan specification");
150 /* Restrict overriding interface name */
151 if (params.vlr_parent[0] == '\0' || !strcmp(params.vlr_parent, ifname))
152 strlcpy(params.vlr_parent, ifname, IFNAMSIZ);
154 errx(1, "ambiguous vlan specification");
158 vlan_create(int s, struct ifreq *ifr)
160 vlan_parse_ethervid(ifr->ifr_name);
162 if (params.vlr_tag != NOTAG || params.vlr_parent[0] != '\0') {
164 * One or both parameters were specified, make sure both.
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;
172 ioctl_ifcreate(s, ifr);
176 vlan_cb(int s, void *arg)
178 if ((params.vlr_tag != NOTAG) ^ (params.vlr_parent[0] != '\0'))
179 errx(1, "both vlan and vlandev must be specified");
183 vlan_set(int s, struct ifreq *ifr)
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");
193 DECL_CMD_FUNC(setvlantag, val, d)
199 ul = strtoul(val, &endp, 0);
201 errx(1, "invalid value for vlan");
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");
207 if (getvlan(s, &ifr, &vreq) != -1) {
208 vreq.vlr_tag = params.vlr_tag;
209 memcpy(¶ms, &vreq, sizeof(params));
215 DECL_CMD_FUNC(setvlandev, val, d)
219 strlcpy(params.vlr_parent, val, sizeof(params.vlr_parent));
221 if (getvlan(s, &ifr, &vreq) != -1)
226 DECL_CMD_FUNC(setvlanproto, val, d)
230 if (strncasecmp(proto_8021Q, val,
231 strlen(proto_8021Q)) == 0) {
232 params.vlr_proto = ETHERTYPE_VLAN;
233 } else if ((strncasecmp(proto_8021ad, val, strlen(proto_8021ad)) == 0)
234 || (strncasecmp(proto_qinq, val, strlen(proto_qinq)) == 0)) {
235 params.vlr_proto = ETHERTYPE_QINQ;
237 errx(1, "invalid value for vlanproto");
239 if (getvlan(s, &ifr, &vreq) != -1) {
240 vreq.vlr_proto = params.vlr_proto;
241 memcpy(¶ms, &vreq, sizeof(params));
247 DECL_CMD_FUNC(setvlanpcp, val, d)
252 ul = strtoul(val, &endp, 0);
254 errx(1, "invalid value for vlanpcp");
256 errx(1, "value for vlanpcp out of range");
257 ifr.ifr_vlan_pcp = ul;
258 if (ioctl(s, SIOCSVLANPCP, (caddr_t)&ifr) == -1)
259 err(1, "SIOCSVLANPCP");
263 DECL_CMD_FUNC(unsetvlandev, val, d)
267 bzero((char *)&vreq, sizeof(struct vlanreq));
268 ifr.ifr_data = (caddr_t)&vreq;
270 if (ioctl(s, SIOCGETVLAN, (caddr_t)&ifr) == -1)
271 err(1, "SIOCGETVLAN");
273 bzero((char *)&vreq.vlr_parent, sizeof(vreq.vlr_parent));
276 if (ioctl(s, SIOCSETVLAN, (caddr_t)&ifr) == -1)
277 err(1, "SIOCSETVLAN");
280 static struct cmd vlan_cmds[] = {
281 DEF_CLONE_CMD_ARG("vlan", setvlantag),
282 DEF_CLONE_CMD_ARG("vlandev", setvlandev),
283 DEF_CLONE_CMD_ARG("vlanproto", setvlanproto),
284 DEF_CMD_ARG("vlanpcp", setvlanpcp),
285 /* NB: non-clone cmds */
286 DEF_CMD_ARG("vlan", setvlantag),
287 DEF_CMD_ARG("vlandev", setvlandev),
288 DEF_CMD_ARG("vlanproto", setvlanproto),
289 /* XXX For compatibility. Should become DEF_CMD() some day. */
290 DEF_CMD_OPTARG("-vlandev", unsetvlandev),
291 DEF_CMD("vlanmtu", IFCAP_VLAN_MTU, setifcap),
292 DEF_CMD("-vlanmtu", -IFCAP_VLAN_MTU, setifcap),
293 DEF_CMD("vlanhwtag", IFCAP_VLAN_HWTAGGING, setifcap),
294 DEF_CMD("-vlanhwtag", -IFCAP_VLAN_HWTAGGING, setifcap),
295 DEF_CMD("vlanhwfilter", IFCAP_VLAN_HWFILTER, setifcap),
296 DEF_CMD("-vlanhwfilter", -IFCAP_VLAN_HWFILTER, setifcap),
297 DEF_CMD("-vlanhwtso", -IFCAP_VLAN_HWTSO, setifcap),
298 DEF_CMD("vlanhwtso", IFCAP_VLAN_HWTSO, setifcap),
299 DEF_CMD("vlanhwcsum", IFCAP_VLAN_HWCSUM, setifcap),
300 DEF_CMD("-vlanhwcsum", -IFCAP_VLAN_HWCSUM, setifcap),
302 static struct afswtch af_vlan = {
303 .af_name = "af_vlan",
305 .af_other_status = vlan_status,
308 static __constructor void
313 for (i = 0; i < nitems(vlan_cmds); i++)
314 cmd_register(&vlan_cmds[i]);
315 af_register(&af_vlan);
316 callback_register(vlan_cb, NULL);
317 clone_setdefcallback_prefix("vlan", vlan_create);
318 clone_setdefcallback_filter(vlan_match_ethervid, vlan_create);