7fc2ce8ae4
and "vlandev" commands can be specified in any order. This makes the code more compact and clear as well. Improve error check on vlan argument. MFC after: 2 weeks
172 lines
4.8 KiB
C
172 lines
4.8 KiB
C
/*
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* Copyright (c) 1999
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* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_vlan_var.h>
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#include <net/route.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <err.h>
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#include <errno.h>
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#include "ifconfig.h"
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif
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static struct vlanreq __vreq;
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static int __have_dev = 0;
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static int __have_tag = 0;
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static void
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vlan_status(int s)
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{
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struct vlanreq vreq;
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bzero((char *)&vreq, sizeof(struct vlanreq));
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ifr.ifr_data = (caddr_t)&vreq;
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if (ioctl(s, SIOCGETVLAN, (caddr_t)&ifr) == -1)
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return;
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printf("\tvlan: %d parent interface: %s\n",
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vreq.vlr_tag, vreq.vlr_parent[0] == '\0' ?
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"<none>" : vreq.vlr_parent);
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return;
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}
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static void
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setvlantag(const char *val, int d, int s, const struct afswtch *afp)
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{
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char *endp;
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u_long ul;
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ul = strtoul(val, &endp, 0);
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if (*endp != '\0')
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errx(1, "invalid value for vlan");
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__vreq.vlr_tag = ul;
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/* check if the value can be represented in vlr_tag */
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if (__vreq.vlr_tag != ul)
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errx(1, "value for vlan out of range");
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/* the kernel will do more specific checks on vlr_tag */
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__have_tag = 1;
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}
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static void
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setvlandev(const char *val, int d, int s, const struct afswtch *afp)
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{
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strncpy(__vreq.vlr_parent, val, sizeof(__vreq.vlr_parent));
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__have_dev = 1;
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}
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static void
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unsetvlandev(const char *val, int d, int s, const struct afswtch *afp)
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{
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struct vlanreq vreq;
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if (val != NULL)
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warnx("argument to -vlandev is useless and hence deprecated");
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bzero((char *)&vreq, sizeof(struct vlanreq));
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ifr.ifr_data = (caddr_t)&vreq;
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if (ioctl(s, SIOCGETVLAN, (caddr_t)&ifr) == -1)
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err(1, "SIOCGETVLAN");
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bzero((char *)&vreq.vlr_parent, sizeof(vreq.vlr_parent));
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vreq.vlr_tag = 0; /* XXX clear parent only (no kernel support now) */
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if (ioctl(s, SIOCSETVLAN, (caddr_t)&ifr) == -1)
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err(1, "SIOCSETVLAN");
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__have_dev = __have_tag = 0;
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}
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static void
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vlan_cb(int s, void *arg)
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{
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if (__have_tag ^ __have_dev)
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errx(1, "both vlan and vlandev must be specified");
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if (__have_tag && __have_dev) {
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ifr.ifr_data = (caddr_t)&__vreq;
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if (ioctl(s, SIOCSETVLAN, (caddr_t)&ifr) == -1)
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err(1, "SIOCSETVLAN");
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}
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}
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static struct cmd vlan_cmds[] = {
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DEF_CMD_ARG("vlan", setvlantag),
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DEF_CMD_ARG("vlandev", setvlandev),
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/* XXX For compatibility. Should become DEF_CMD() some day. */
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DEF_CMD_OPTARG("-vlandev", unsetvlandev),
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DEF_CMD("vlanmtu", IFCAP_VLAN_MTU, setifcap),
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DEF_CMD("-vlanmtu", -IFCAP_VLAN_MTU, setifcap),
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DEF_CMD("vlanhwtag", IFCAP_VLAN_HWTAGGING, setifcap),
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DEF_CMD("-vlanhwtag", -IFCAP_VLAN_HWTAGGING, setifcap),
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};
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static struct afswtch af_vlan = {
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.af_name = "af_vlan",
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.af_af = AF_UNSPEC,
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.af_other_status = vlan_status,
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};
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static __constructor void
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vlan_ctor(void)
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{
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#define N(a) (sizeof(a) / sizeof(a[0]))
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int i;
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for (i = 0; i < N(vlan_cmds); i++)
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cmd_register(&vlan_cmds[i]);
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af_register(&af_vlan);
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callback_register(vlan_cb, NULL);
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#undef N
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}
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