183 lines
5.0 KiB
C
183 lines
5.0 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2010-2011 Monthadar Al Jaberi, TerraNet AB
|
|
* 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,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
|
|
* redistribution must be conditioned upon including a substantially
|
|
* similar Disclaimer requirement for further binary redistribution.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
|
|
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
|
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
|
|
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF 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 DAMAGES.
|
|
*/
|
|
#include <sys/param.h>
|
|
#include <sys/module.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/ucred.h>
|
|
#include <sys/jail.h>
|
|
|
|
#include <sys/sockio.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/callout.h>
|
|
#include <sys/endian.h>
|
|
#include <sys/kthread.h>
|
|
#include <sys/taskqueue.h>
|
|
#include <sys/priv.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_dl.h>
|
|
#include <net/if_media.h>
|
|
#include <net/if_types.h>
|
|
#include <net/if_arp.h>
|
|
#include <net/ethernet.h>
|
|
#include <net/if_llc.h>
|
|
#include <net/vnet.h>
|
|
|
|
#include <net80211/ieee80211_var.h>
|
|
#include <net80211/ieee80211_regdomain.h>
|
|
|
|
#include <net/bpf.h>
|
|
|
|
#include <sys/errno.h>
|
|
#include <sys/conf.h> /* cdevsw struct */
|
|
#include <sys/uio.h> /* uio struct */
|
|
|
|
#include <netinet/in.h>
|
|
#include <netinet/if_ether.h>
|
|
|
|
#include "if_wtapvar.h"
|
|
#include "if_wtapioctl.h"
|
|
#include "if_medium.h"
|
|
#include "wtap_hal/hal.h"
|
|
|
|
/* WTAP PLUGINS */
|
|
#include "plugins/visibility.h"
|
|
|
|
MALLOC_DEFINE(M_WTAP, "wtap", "wtap wireless simulator");
|
|
MALLOC_DEFINE(M_WTAP_PACKET, "wtap packet", "wtap wireless simulator packet");
|
|
MALLOC_DEFINE(M_WTAP_RXBUF, "wtap rxbuf",
|
|
"wtap wireless simulator receive buffer");
|
|
MALLOC_DEFINE(M_WTAP_PLUGIN, "wtap plugin", "wtap wireless simulator plugin");
|
|
|
|
static struct wtap_hal *hal;
|
|
|
|
/* Function prototypes */
|
|
static d_ioctl_t wtap_ioctl;
|
|
|
|
static struct cdev *sdev;
|
|
static struct cdevsw wtap_cdevsw = {
|
|
.d_version = D_VERSION,
|
|
.d_flags = 0,
|
|
.d_ioctl = wtap_ioctl,
|
|
.d_name = "wtapctl",
|
|
};
|
|
|
|
int
|
|
wtap_ioctl(struct cdev *dev, u_long cmd, caddr_t data,
|
|
int fflag, struct thread *td)
|
|
{
|
|
int error = 0;
|
|
|
|
CURVNET_SET(CRED_TO_VNET(curthread->td_ucred));
|
|
|
|
switch(cmd) {
|
|
case WTAPIOCTLCRT:
|
|
if(new_wtap(hal, *(int *)data))
|
|
error = EINVAL;
|
|
break;
|
|
case WTAPIOCTLDEL:
|
|
if(free_wtap(hal, *(int *)data))
|
|
error = EINVAL;
|
|
break;
|
|
default:
|
|
DWTAP_PRINTF("Unknown WTAP IOCTL\n");
|
|
error = EINVAL;
|
|
}
|
|
|
|
CURVNET_RESTORE();
|
|
return error;
|
|
}
|
|
|
|
/* The function called at load/unload. */
|
|
static int
|
|
event_handler(module_t module, int event, void *arg)
|
|
{
|
|
struct visibility_plugin *plugin;
|
|
int e = 0; /* Error, 0 for normal return status */
|
|
|
|
switch (event) {
|
|
case MOD_LOAD:
|
|
sdev = make_dev(&wtap_cdevsw,0,UID_ROOT,
|
|
GID_WHEEL,0600,(const char *)"wtapctl");
|
|
hal = (struct wtap_hal *)malloc(sizeof(struct wtap_hal),
|
|
M_WTAP, M_NOWAIT | M_ZERO);
|
|
|
|
init_hal(hal);
|
|
|
|
/* Setting up a simple plugin */
|
|
plugin = (struct visibility_plugin *)malloc
|
|
(sizeof(struct visibility_plugin), M_WTAP_PLUGIN,
|
|
M_NOWAIT | M_ZERO);
|
|
plugin->base.wp_hal = hal;
|
|
plugin->base.init = visibility_init;
|
|
plugin->base.deinit = visibility_deinit;
|
|
plugin->base.work = visibility_work;
|
|
register_plugin(hal, (struct wtap_plugin *)plugin);
|
|
|
|
printf("Loaded wtap wireless simulator\n");
|
|
break;
|
|
case MOD_UNLOAD:
|
|
destroy_dev(sdev);
|
|
deregister_plugin(hal);
|
|
deinit_hal(hal);
|
|
free(hal, M_WTAP);
|
|
printf("Unloading wtap wireless simulator\n");
|
|
break;
|
|
default:
|
|
e = EOPNOTSUPP; /* Error, Operation Not Supported */
|
|
break;
|
|
}
|
|
|
|
return(e);
|
|
}
|
|
|
|
/* The second argument of DECLARE_MODULE. */
|
|
static moduledata_t wtap_conf = {
|
|
"wtap", /* module name */
|
|
event_handler, /* event handler */
|
|
NULL /* extra data */
|
|
};
|
|
|
|
DECLARE_MODULE(wtap, wtap_conf, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
|
|
MODULE_DEPEND(wtap, wlan, 1, 1, 1); /* 802.11 media layer */
|