2 * Loopback IEEE 802.15.4 interface
4 * Copyright 2007-2012 Siemens AG
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
16 * Sergey Lapin <slapin@ossfans.org>
17 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
18 * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
21 #include <linux/module.h>
22 #include <linux/timer.h>
23 #include <linux/platform_device.h>
24 #include <linux/netdevice.h>
25 #include <linux/device.h>
26 #include <linux/spinlock.h>
27 #include <net/mac802154.h>
28 #include <net/cfg802154.h>
30 static int numlbs
= 1;
32 struct fakelb_dev_priv
{
33 struct ieee802154_dev
*dev
;
35 struct list_head list
;
36 struct fakelb_priv
*fake
;
43 struct list_head list
;
48 fakelb_hw_ed(struct ieee802154_dev
*dev
, u8
*level
)
58 fakelb_hw_channel(struct ieee802154_dev
*dev
, int page
, int channel
)
60 pr_debug("set channel to %d\n", channel
);
63 dev
->phy
->current_page
= page
;
64 dev
->phy
->current_channel
= channel
;
70 fakelb_hw_deliver(struct fakelb_dev_priv
*priv
, struct sk_buff
*skb
)
72 struct sk_buff
*newskb
;
74 spin_lock(&priv
->lock
);
76 newskb
= pskb_copy(skb
, GFP_ATOMIC
);
77 ieee802154_rx_irqsafe(priv
->dev
, newskb
, 0xcc);
79 spin_unlock(&priv
->lock
);
83 fakelb_hw_xmit(struct ieee802154_dev
*dev
, struct sk_buff
*skb
)
85 struct fakelb_dev_priv
*priv
= dev
->priv
;
86 struct fakelb_priv
*fake
= priv
->fake
;
90 read_lock_bh(&fake
->lock
);
91 if (priv
->list
.next
== priv
->list
.prev
) {
92 /* we are the only one device */
93 fakelb_hw_deliver(priv
, skb
);
95 struct fakelb_dev_priv
*dp
;
96 list_for_each_entry(dp
, &priv
->fake
->list
, list
) {
98 (dp
->dev
->phy
->current_channel
==
99 priv
->dev
->phy
->current_channel
))
100 fakelb_hw_deliver(dp
, skb
);
103 read_unlock_bh(&fake
->lock
);
109 fakelb_hw_start(struct ieee802154_dev
*dev
) {
110 struct fakelb_dev_priv
*priv
= dev
->priv
;
113 spin_lock(&priv
->lock
);
118 spin_unlock(&priv
->lock
);
124 fakelb_hw_stop(struct ieee802154_dev
*dev
) {
125 struct fakelb_dev_priv
*priv
= dev
->priv
;
127 spin_lock(&priv
->lock
);
129 spin_unlock(&priv
->lock
);
132 static struct ieee802154_ops fakelb_ops
= {
133 .owner
= THIS_MODULE
,
134 .xmit
= fakelb_hw_xmit
,
136 .set_channel
= fakelb_hw_channel
,
137 .start
= fakelb_hw_start
,
138 .stop
= fakelb_hw_stop
,
141 /* Number of dummy devices to be set up by this module. */
142 module_param(numlbs
, int, 0);
143 MODULE_PARM_DESC(numlbs
, " number of pseudo devices");
145 static int fakelb_add_one(struct device
*dev
, struct fakelb_priv
*fake
)
147 struct fakelb_dev_priv
*priv
;
149 struct ieee802154_dev
*ieee
;
151 ieee
= ieee802154_alloc_device(sizeof(*priv
), &fakelb_ops
);
158 /* 868 MHz BPSK 802.15.4-2003 */
159 ieee
->phy
->channels_supported
[0] |= 1;
160 /* 915 MHz BPSK 802.15.4-2003 */
161 ieee
->phy
->channels_supported
[0] |= 0x7fe;
162 /* 2.4 GHz O-QPSK 802.15.4-2003 */
163 ieee
->phy
->channels_supported
[0] |= 0x7FFF800;
164 /* 868 MHz ASK 802.15.4-2006 */
165 ieee
->phy
->channels_supported
[1] |= 1;
166 /* 915 MHz ASK 802.15.4-2006 */
167 ieee
->phy
->channels_supported
[1] |= 0x7fe;
168 /* 868 MHz O-QPSK 802.15.4-2006 */
169 ieee
->phy
->channels_supported
[2] |= 1;
170 /* 915 MHz O-QPSK 802.15.4-2006 */
171 ieee
->phy
->channels_supported
[2] |= 0x7fe;
172 /* 2.4 GHz CSS 802.15.4a-2007 */
173 ieee
->phy
->channels_supported
[3] |= 0x3fff;
174 /* UWB Sub-gigahertz 802.15.4a-2007 */
175 ieee
->phy
->channels_supported
[4] |= 1;
176 /* UWB Low band 802.15.4a-2007 */
177 ieee
->phy
->channels_supported
[4] |= 0x1e;
178 /* UWB High band 802.15.4a-2007 */
179 ieee
->phy
->channels_supported
[4] |= 0xffe0;
180 /* 750 MHz O-QPSK 802.15.4c-2009 */
181 ieee
->phy
->channels_supported
[5] |= 0xf;
182 /* 750 MHz MPSK 802.15.4c-2009 */
183 ieee
->phy
->channels_supported
[5] |= 0xf0;
184 /* 950 MHz BPSK 802.15.4d-2009 */
185 ieee
->phy
->channels_supported
[6] |= 0x3ff;
186 /* 950 MHz GFSK 802.15.4d-2009 */
187 ieee
->phy
->channels_supported
[6] |= 0x3ffc00;
189 INIT_LIST_HEAD(&priv
->list
);
192 spin_lock_init(&priv
->lock
);
196 err
= ieee802154_register_device(ieee
);
200 write_lock_bh(&fake
->lock
);
201 list_add_tail(&priv
->list
, &fake
->list
);
202 write_unlock_bh(&fake
->lock
);
207 ieee802154_free_device(priv
->dev
);
211 static void fakelb_del(struct fakelb_dev_priv
*priv
)
213 write_lock_bh(&priv
->fake
->lock
);
214 list_del(&priv
->list
);
215 write_unlock_bh(&priv
->fake
->lock
);
217 ieee802154_unregister_device(priv
->dev
);
218 ieee802154_free_device(priv
->dev
);
221 static int fakelb_probe(struct platform_device
*pdev
)
223 struct fakelb_priv
*priv
;
224 struct fakelb_dev_priv
*dp
;
228 priv
= devm_kzalloc(&pdev
->dev
, sizeof(struct fakelb_priv
),
233 INIT_LIST_HEAD(&priv
->list
);
234 rwlock_init(&priv
->lock
);
236 for (i
= 0; i
< numlbs
; i
++) {
237 err
= fakelb_add_one(&pdev
->dev
, priv
);
242 platform_set_drvdata(pdev
, priv
);
243 dev_info(&pdev
->dev
, "added ieee802154 hardware\n");
247 list_for_each_entry(dp
, &priv
->list
, list
)
253 static int fakelb_remove(struct platform_device
*pdev
)
255 struct fakelb_priv
*priv
= platform_get_drvdata(pdev
);
256 struct fakelb_dev_priv
*dp
, *temp
;
258 list_for_each_entry_safe(dp
, temp
, &priv
->list
, list
)
264 static struct platform_device
*ieee802154fake_dev
;
266 static struct platform_driver ieee802154fake_driver
= {
267 .probe
= fakelb_probe
,
268 .remove
= fakelb_remove
,
270 .name
= "ieee802154fakelb",
271 .owner
= THIS_MODULE
,
275 static __init
int fakelb_init_module(void)
277 ieee802154fake_dev
= platform_device_register_simple(
278 "ieee802154fakelb", -1, NULL
, 0);
279 return platform_driver_register(&ieee802154fake_driver
);
282 static __exit
void fake_remove_module(void)
284 platform_driver_unregister(&ieee802154fake_driver
);
285 platform_device_unregister(ieee802154fake_dev
);
288 module_init(fakelb_init_module
);
289 module_exit(fake_remove_module
);
290 MODULE_LICENSE("GPL");