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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2008 Andrew Thompson. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <net/if.h>
#include <net/if_gre.h>
#include <ctype.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <err.h>
#include "ifconfig.h"
#define GREBITS "\020\01ENABLE_CSUM\02ENABLE_SEQ\03UDPENCAP"
static void gre_status(int s);
static void
gre_status(int s)
{
uint32_t opts, port;
opts = 0;
ifr.ifr_data = (caddr_t)&opts;
if (ioctl(s, GREGKEY, &ifr) == 0)
if (opts != 0)
printf("\tgrekey: 0x%x (%u)\n", opts, opts);
opts = 0;
if (ioctl(s, GREGOPTS, &ifr) != 0 || opts == 0)
return;
port = 0;
ifr.ifr_data = (caddr_t)&port;
if (ioctl(s, GREGPORT, &ifr) == 0 && port != 0)
printf("\tudpport: %u\n", port);
printb("\toptions", opts, GREBITS);
putchar('\n');
}
static void
setifgrekey(const char *val, int dummy __unused, int s,
const struct afswtch *afp)
{
uint32_t grekey = strtol(val, NULL, 0);
strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
ifr.ifr_data = (caddr_t)&grekey;
if (ioctl(s, GRESKEY, (caddr_t)&ifr) < 0)
warn("ioctl (set grekey)");
}
static void
setifgreport(const char *val, int dummy __unused, int s,
const struct afswtch *afp)
{
uint32_t udpport = strtol(val, NULL, 0);
strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
ifr.ifr_data = (caddr_t)&udpport;
if (ioctl(s, GRESPORT, (caddr_t)&ifr) < 0)
warn("ioctl (set udpport)");
}
static void
setifgreopts(const char *val, int d, int s, const struct afswtch *afp)
{
uint32_t opts;
ifr.ifr_data = (caddr_t)&opts;
if (ioctl(s, GREGOPTS, &ifr) == -1) {
warn("ioctl(GREGOPTS)");
return;
}
if (d < 0)
opts &= ~(-d);
else
opts |= d;
if (ioctl(s, GRESOPTS, &ifr) == -1) {
warn("ioctl(GIFSOPTS)");
return;
}
}
static struct cmd gre_cmds[] = {
DEF_CMD_ARG("grekey", setifgrekey),
DEF_CMD_ARG("udpport", setifgreport),
DEF_CMD("enable_csum", GRE_ENABLE_CSUM, setifgreopts),
DEF_CMD("-enable_csum",-GRE_ENABLE_CSUM,setifgreopts),
DEF_CMD("enable_seq", GRE_ENABLE_SEQ, setifgreopts),
DEF_CMD("-enable_seq",-GRE_ENABLE_SEQ, setifgreopts),
DEF_CMD("udpencap", GRE_UDPENCAP, setifgreopts),
DEF_CMD("-udpencap",-GRE_UDPENCAP, setifgreopts),
};
static struct afswtch af_gre = {
.af_name = "af_gre",
.af_af = AF_UNSPEC,
.af_other_status = gre_status,
};
static __constructor void
gre_ctor(void)
{
size_t i;
for (i = 0; i < nitems(gre_cmds); i++)
cmd_register(&gre_cmds[i]);
af_register(&af_gre);
}
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