ifvlan.c revision 331722
1/* 2 * Copyright (c) 1999 Bill Paul <wpaul@ctr.columbia.edu> 3 * Copyright (c) 2012 ADARA Networks, Inc. 4 * All rights reserved. 5 * 6 * Portions of this software were developed by Robert N. M. Watson under 7 * contract to ADARA Networks, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Bill Paul. 20 * 4. Neither the name of the author nor the names of any co-contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 34 * THE POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37#include <sys/param.h> 38#include <sys/ioctl.h> 39#include <sys/socket.h> 40#include <sys/sockio.h> 41 42#include <stdlib.h> 43#include <unistd.h> 44 45#include <net/ethernet.h> 46#include <net/if.h> 47#include <net/if_vlan_var.h> 48#include <net/route.h> 49 50#include <ctype.h> 51#include <stdio.h> 52#include <string.h> 53#include <stdlib.h> 54#include <unistd.h> 55#include <err.h> 56#include <errno.h> 57 58#include "ifconfig.h" 59 60#ifndef lint 61static const char rcsid[] = 62 "$FreeBSD: stable/11/sbin/ifconfig/ifvlan.c 331722 2018-03-29 02:50:57Z eadler $"; 63#endif 64 65#define NOTAG ((u_short) -1) 66 67static struct vlanreq params = { 68 .vlr_tag = NOTAG, 69}; 70 71static int 72getvlan(int s, struct ifreq *ifr, struct vlanreq *vreq) 73{ 74 bzero((char *)vreq, sizeof(*vreq)); 75 ifr->ifr_data = (caddr_t)vreq; 76 77 return ioctl(s, SIOCGETVLAN, (caddr_t)ifr); 78} 79 80static void 81vlan_status(int s) 82{ 83 struct vlanreq vreq; 84 85 if (getvlan(s, &ifr, &vreq) == -1) 86 return; 87 printf("\tvlan: %d", vreq.vlr_tag); 88 if (ioctl(s, SIOCGVLANPCP, (caddr_t)&ifr) != -1) 89 printf(" vlanpcp: %u", ifr.ifr_vlan_pcp); 90 printf(" parent interface: %s", vreq.vlr_parent[0] == '\0' ? 91 "<none>" : vreq.vlr_parent); 92 printf("\n"); 93} 94 95static void 96vlan_create(int s, struct ifreq *ifr) 97{ 98 if (params.vlr_tag != NOTAG || params.vlr_parent[0] != '\0') { 99 /* 100 * One or both parameters were specified, make sure both. 101 */ 102 if (params.vlr_tag == NOTAG) 103 errx(1, "must specify a tag for vlan create"); 104 if (params.vlr_parent[0] == '\0') 105 errx(1, "must specify a parent device for vlan create"); 106 ifr->ifr_data = (caddr_t) ¶ms; 107 } 108 if (ioctl(s, SIOCIFCREATE2, ifr) < 0) 109 err(1, "SIOCIFCREATE2"); 110} 111 112static void 113vlan_cb(int s, void *arg) 114{ 115 if ((params.vlr_tag != NOTAG) ^ (params.vlr_parent[0] != '\0')) 116 errx(1, "both vlan and vlandev must be specified"); 117} 118 119static void 120vlan_set(int s, struct ifreq *ifr) 121{ 122 if (params.vlr_tag != NOTAG && params.vlr_parent[0] != '\0') { 123 ifr->ifr_data = (caddr_t) ¶ms; 124 if (ioctl(s, SIOCSETVLAN, (caddr_t)ifr) == -1) 125 err(1, "SIOCSETVLAN"); 126 } 127} 128 129static 130DECL_CMD_FUNC(setvlantag, val, d) 131{ 132 struct vlanreq vreq; 133 u_long ul; 134 char *endp; 135 136 ul = strtoul(val, &endp, 0); 137 if (*endp != '\0') 138 errx(1, "invalid value for vlan"); 139 params.vlr_tag = ul; 140 /* check if the value can be represented in vlr_tag */ 141 if (params.vlr_tag != ul) 142 errx(1, "value for vlan out of range"); 143 144 if (getvlan(s, &ifr, &vreq) != -1) 145 vlan_set(s, &ifr); 146} 147 148static 149DECL_CMD_FUNC(setvlandev, val, d) 150{ 151 struct vlanreq vreq; 152 153 strlcpy(params.vlr_parent, val, sizeof(params.vlr_parent)); 154 155 if (getvlan(s, &ifr, &vreq) != -1) 156 vlan_set(s, &ifr); 157} 158 159static 160DECL_CMD_FUNC(setvlanpcp, val, d) 161{ 162 u_long ul; 163 char *endp; 164 165 ul = strtoul(val, &endp, 0); 166 if (*endp != '\0') 167 errx(1, "invalid value for vlanpcp"); 168 if (ul > 7) 169 errx(1, "value for vlanpcp out of range"); 170 ifr.ifr_vlan_pcp = ul; 171 if (ioctl(s, SIOCSVLANPCP, (caddr_t)&ifr) == -1) 172 err(1, "SIOCSVLANPCP"); 173} 174 175static 176DECL_CMD_FUNC(unsetvlandev, val, d) 177{ 178 struct vlanreq vreq; 179 180 bzero((char *)&vreq, sizeof(struct vlanreq)); 181 ifr.ifr_data = (caddr_t)&vreq; 182 183 if (ioctl(s, SIOCGETVLAN, (caddr_t)&ifr) == -1) 184 err(1, "SIOCGETVLAN"); 185 186 bzero((char *)&vreq.vlr_parent, sizeof(vreq.vlr_parent)); 187 vreq.vlr_tag = 0; 188 189 if (ioctl(s, SIOCSETVLAN, (caddr_t)&ifr) == -1) 190 err(1, "SIOCSETVLAN"); 191} 192 193static struct cmd vlan_cmds[] = { 194 DEF_CLONE_CMD_ARG("vlan", setvlantag), 195 DEF_CLONE_CMD_ARG("vlandev", setvlandev), 196 DEF_CMD_ARG("vlanpcp", setvlanpcp), 197 /* NB: non-clone cmds */ 198 DEF_CMD_ARG("vlan", setvlantag), 199 DEF_CMD_ARG("vlandev", setvlandev), 200 /* XXX For compatibility. Should become DEF_CMD() some day. */ 201 DEF_CMD_OPTARG("-vlandev", unsetvlandev), 202 DEF_CMD("vlanmtu", IFCAP_VLAN_MTU, setifcap), 203 DEF_CMD("-vlanmtu", -IFCAP_VLAN_MTU, setifcap), 204 DEF_CMD("vlanhwtag", IFCAP_VLAN_HWTAGGING, setifcap), 205 DEF_CMD("-vlanhwtag", -IFCAP_VLAN_HWTAGGING, setifcap), 206 DEF_CMD("vlanhwfilter", IFCAP_VLAN_HWFILTER, setifcap), 207 DEF_CMD("-vlanhwfilter", -IFCAP_VLAN_HWFILTER, setifcap), 208 DEF_CMD("-vlanhwtso", -IFCAP_VLAN_HWTSO, setifcap), 209 DEF_CMD("vlanhwtso", IFCAP_VLAN_HWTSO, setifcap), 210 DEF_CMD("vlanhwcsum", IFCAP_VLAN_HWCSUM, setifcap), 211 DEF_CMD("-vlanhwcsum", -IFCAP_VLAN_HWCSUM, setifcap), 212}; 213static struct afswtch af_vlan = { 214 .af_name = "af_vlan", 215 .af_af = AF_UNSPEC, 216 .af_other_status = vlan_status, 217}; 218 219static __constructor void 220vlan_ctor(void) 221{ 222 size_t i; 223 224 for (i = 0; i < nitems(vlan_cmds); i++) 225 cmd_register(&vlan_cmds[i]); 226 af_register(&af_vlan); 227 callback_register(vlan_cb, NULL); 228 clone_setdefcallback("vlan", vlan_create); 229} 230