155 lines
3.8 KiB
C
155 lines
3.8 KiB
C
/* $NetBSD: vlan.c,v 1.3 2005/03/19 17:31:48 thorpej Exp $ */
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/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. 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. Neither the name of the University nor the names of its 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 THE REGENTS 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 THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: vlan.c,v 1.3 2005/03/19 17:31:48 thorpej Exp $");
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <net/if_ether.h>
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#include <net/if_vlanvar.h>
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#include <ctype.h>
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#include <err.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "extern.h"
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#include "vlan.h"
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static u_int vlan_tag = (u_int)-1;
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static int
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checkifname(const char *ifname)
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{
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return strncmp(ifname, "vlan", 4) != 0 ||
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!isdigit((unsigned char)ifname[4]);
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}
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static void
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assertifname(const char *ifname)
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{
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if (checkifname(ifname)) {
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errx(EXIT_FAILURE, "valid only with vlan(4) interfaces");
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}
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}
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void
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setvlan(const char *val, int d)
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{
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struct vlanreq vlr;
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assertifname(ifr.ifr_name);
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vlan_tag = atoi(val);
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memset(&vlr, 0, sizeof(vlr));
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ifr.ifr_data = (void *)&vlr;
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if (ioctl(s, SIOCGETVLAN, &ifr) == -1)
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err(EXIT_FAILURE, "SIOCGETVLAN");
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vlr.vlr_tag = vlan_tag;
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if (ioctl(s, SIOCSETVLAN, &ifr) == -1)
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err(EXIT_FAILURE, "SIOCSETVLAN");
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}
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void
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setvlanif(const char *val, int d)
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{
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struct vlanreq vlr;
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assertifname(ifr.ifr_name);
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if (vlan_tag == (u_int)-1)
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errx(EXIT_FAILURE,
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"must specify both ``vlan'' and ``vlanif''");
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memset(&vlr, 0, sizeof(vlr));
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ifr.ifr_data = (void *)&vlr;
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if (ioctl(s, SIOCGETVLAN, &ifr) == -1)
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err(EXIT_FAILURE, "SIOCGETVLAN");
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strlcpy(vlr.vlr_parent, val, sizeof(vlr.vlr_parent));
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vlr.vlr_tag = vlan_tag;
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if (ioctl(s, SIOCSETVLAN, &ifr) == -1)
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err(EXIT_FAILURE, "SIOCSETVLAN");
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}
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void
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unsetvlanif(const char *val, int d)
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{
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struct vlanreq vlr;
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assertifname(ifr.ifr_name);
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memset(&vlr, 0, sizeof(vlr));
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ifr.ifr_data = (void *)&vlr;
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if (ioctl(s, SIOCGETVLAN, &ifr) == -1)
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err(EXIT_FAILURE, "SIOCGETVLAN");
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vlr.vlr_parent[0] = '\0';
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vlr.vlr_tag = 0;
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if (ioctl(s, SIOCSETVLAN, &ifr) == -1)
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err(EXIT_FAILURE, "SIOCSETVLAN");
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}
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void
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vlan_status(void)
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{
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struct vlanreq vlr;
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if (checkifname(ifr.ifr_name))
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return;
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memset(&vlr, 0, sizeof(vlr));
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ifr.ifr_data = (void *)&vlr;
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if (ioctl(s, SIOCGETVLAN, &ifr) == -1)
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return;
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if (vlr.vlr_tag || vlr.vlr_parent[0] != '\0')
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printf("\tvlan: %d parent: %s\n",
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vlr.vlr_tag, vlr.vlr_parent[0] == '\0' ?
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"<none>" : vlr.vlr_parent);
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}
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