2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2010-2011 Monthadar Al Jaberi, TerraNet AB
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer,
12 * without modification.
13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
15 * redistribution must be conditioned upon including a substantially
16 * similar Disclaimer requirement for further binary redistribution.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
22 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
23 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
24 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
27 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
29 * THE POSSIBILITY OF SUCH DAMAGES.
33 #include <sys/param.h>
34 #include <sys/module.h>
35 #include <sys/kernel.h>
36 #include <sys/systm.h>
37 #include <sys/sysctl.h>
39 #include <sys/malloc.h>
41 #include <sys/mutex.h>
43 #include <sys/ucred.h>
46 #include <sys/sockio.h>
47 #include <sys/socket.h>
48 #include <sys/socketvar.h>
49 #include <sys/errno.h>
50 #include <sys/callout.h>
51 #include <sys/endian.h>
52 #include <sys/kthread.h>
53 #include <sys/taskqueue.h>
55 #include <sys/sysctl.h>
57 #include <machine/bus.h>
60 #include <net/if_dl.h>
61 #include <net/if_media.h>
62 #include <net/if_types.h>
63 #include <net/if_arp.h>
64 #include <net/ethernet.h>
65 #include <net/if_llc.h>
68 #include <net80211/ieee80211_var.h>
69 #include <net80211/ieee80211_regdomain.h>
73 #include <sys/errno.h>
74 #include <sys/conf.h> /* cdevsw struct */
75 #include <sys/uio.h> /* uio struct */
77 #include <netinet/in.h>
78 #include <netinet/if_ether.h>
80 #include "if_wtapvar.h"
81 #include "if_wtapioctl.h"
82 #include "if_medium.h"
83 #include "wtap_hal/hal.h"
86 #include "plugins/visibility.h"
88 MALLOC_DEFINE(M_WTAP, "wtap", "wtap wireless simulator");
89 MALLOC_DEFINE(M_WTAP_PACKET, "wtap packet", "wtap wireless simulator packet");
90 MALLOC_DEFINE(M_WTAP_RXBUF, "wtap rxbuf",
91 "wtap wireless simulator receive buffer");
92 MALLOC_DEFINE(M_WTAP_PLUGIN, "wtap plugin", "wtap wireless simulator plugin");
94 static struct wtap_hal *hal;
96 /* Function prototypes */
97 static d_ioctl_t wtap_ioctl;
99 static struct cdev *sdev;
100 static struct cdevsw wtap_cdevsw = {
101 .d_version = D_VERSION,
103 .d_ioctl = wtap_ioctl,
108 wtap_ioctl(struct cdev *dev, u_long cmd, caddr_t data,
109 int fflag, struct thread *td)
113 CURVNET_SET(CRED_TO_VNET(curthread->td_ucred));
117 if(new_wtap(hal, *(int *)data))
121 if(free_wtap(hal, *(int *)data))
125 DWTAP_PRINTF("Unknown WTAP IOCTL\n");
133 /* The function called at load/unload. */
135 event_handler(module_t module, int event, void *arg)
137 struct visibility_plugin *plugin;
138 int e = 0; /* Error, 0 for normal return status */
142 sdev = make_dev(&wtap_cdevsw,0,UID_ROOT,
143 GID_WHEEL,0600,(const char *)"wtapctl");
144 hal = (struct wtap_hal *)malloc(sizeof(struct wtap_hal),
145 M_WTAP, M_NOWAIT | M_ZERO);
146 bzero(hal, sizeof(struct wtap_hal));
150 /* Setting up a simple plugin */
151 plugin = (struct visibility_plugin *)malloc
152 (sizeof(struct visibility_plugin), M_WTAP_PLUGIN,
154 plugin->base.wp_hal = hal;
155 plugin->base.init = visibility_init;
156 plugin->base.deinit = visibility_deinit;
157 plugin->base.work = visibility_work;
158 register_plugin(hal, (struct wtap_plugin *)plugin);
160 printf("Loaded wtap wireless simulator\n");
164 deregister_plugin(hal);
167 printf("Unloading wtap wireless simulator\n");
170 e = EOPNOTSUPP; /* Error, Operation Not Supported */
177 /* The second argument of DECLARE_MODULE. */
178 static moduledata_t wtap_conf = {
179 "wtap", /* module name */
180 event_handler, /* event handler */
181 NULL /* extra data */
184 DECLARE_MODULE(wtap, wtap_conf, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
185 MODULE_DEPEND(wtap, wlan, 1, 1, 1); /* 802.11 media layer */