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/*-
* 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.
*
* $FreeBSD$
*/
#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/types.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 recieve 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("Unkown 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);
bzero(hal, sizeof(struct wtap_hal));
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 */
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