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
getvlan(int s,struct ifreq * ifr,struct vlanreq * vreq)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
vlan_status(int s)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
vlan_create(int s,struct ifreq * ifr)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
vlan_cb(int s,void * arg)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
vlan_set(int s,struct ifreq * ifr)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
DECL_CMD_FUNC(setvlantag,val,d)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
DECL_CMD_FUNC(setvlandev,val,d)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
DECL_CMD_FUNC(unsetvlandev,val,d)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 DEF_CMD("vlanhwcsum", IFCAP_VLAN_HWCSUM, setifcap),
187 DEF_CMD("-vlanhwcsum", -IFCAP_VLAN_HWCSUM, setifcap),
188 };
189 static struct afswtch af_vlan = {
190 .af_name = "af_vlan",
191 .af_af = AF_UNSPEC,
192 .af_other_status = vlan_status,
193 };
194
195 static __constructor void
vlan_ctor(void)196 vlan_ctor(void)
197 {
198 #define N(a) (sizeof(a) / sizeof(a[0]))
199 size_t i;
200
201 for (i = 0; i < N(vlan_cmds); i++)
202 cmd_register(&vlan_cmds[i]);
203 af_register(&af_vlan);
204 callback_register(vlan_cb, NULL);
205 clone_setdefcallback("vlan", vlan_create);
206 #undef N
207 }
208