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