[linux-2.6-block.git] / drivers / ieee802154 / fakehard.c

/*
 * Sample driver for HardMAC IEEE 802.15.4 devices
 *
 * Copyright (C) 2009 Siemens AG
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Written by:
 * Dmitry Eremin-Solenikov <dmitry.baryshkov@siemens.com>
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/if_arp.h>

#include <net/ieee802154/af_ieee802154.h>
#include <net/ieee802154/netdevice.h>
#include <net/ieee802154/mac_def.h>
#include <net/ieee802154/nl802154.h>

static u16 fake_get_pan_id(struct net_device *dev)
{
	BUG_ON(dev->type != ARPHRD_IEEE802154);

	return 0xeba1;
}

static u16 fake_get_short_addr(struct net_device *dev)
{
	BUG_ON(dev->type != ARPHRD_IEEE802154);

	return 0x1;
}

static u8 fake_get_dsn(struct net_device *dev)
{
	BUG_ON(dev->type != ARPHRD_IEEE802154);

	return 0x00; /* DSN are implemented in HW, so return just 0 */
}

static u8 fake_get_bsn(struct net_device *dev)
{
	BUG_ON(dev->type != ARPHRD_IEEE802154);

	return 0x00; /* BSN are implemented in HW, so return just 0 */
}

static int fake_assoc_req(struct net_device *dev,
		struct ieee802154_addr *addr, u8 channel, u8 cap)
{
	/* We simply emulate it here */
	return ieee802154_nl_assoc_confirm(dev, fake_get_short_addr(dev),
			IEEE802154_SUCCESS);
}

static int fake_assoc_resp(struct net_device *dev,
		struct ieee802154_addr *addr, u16 short_addr, u8 status)
{
	return 0;
}

static int fake_disassoc_req(struct net_device *dev,
		struct ieee802154_addr *addr, u8 reason)
{
	return ieee802154_nl_disassoc_confirm(dev, IEEE802154_SUCCESS);
}

static int fake_start_req(struct net_device *dev, struct ieee802154_addr *addr,
				u8 channel,
				u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
				u8 coord_realign)
{
	return 0;
}

static int fake_scan_req(struct net_device *dev, u8 type, u32 channels,
		u8 duration)
{
	u8 edl[27] = {};
	return ieee802154_nl_scan_confirm(dev, IEEE802154_SUCCESS, type,
			channels,
			type == IEEE802154_MAC_SCAN_ED ? edl : NULL);
}

static struct ieee802154_mlme_ops fake_mlme = {
	.assoc_req = fake_assoc_req,
	.assoc_resp = fake_assoc_resp,
	.disassoc_req = fake_disassoc_req,
	.start_req = fake_start_req,
	.scan_req = fake_scan_req,

	.get_pan_id = fake_get_pan_id,
	.get_short_addr = fake_get_short_addr,
	.get_dsn = fake_get_dsn,
	.get_bsn = fake_get_bsn,
};

static int ieee802154_fake_open(struct net_device *dev)
{
	netif_start_queue(dev);
	return 0;
}

static int ieee802154_fake_close(struct net_device *dev)
{
	netif_stop_queue(dev);
	return 0;
}

static int ieee802154_fake_xmit(struct sk_buff *skb, struct net_device *dev)
{
	skb->iif = dev->ifindex;
	skb->dev = dev;
	dev->stats.tx_packets++;
	dev->stats.tx_bytes += skb->len;

	dev->trans_start = jiffies;

	/* FIXME: do hardware work here ... */

	return 0;
}


static int ieee802154_fake_ioctl(struct net_device *dev, struct ifreq *ifr,
		int cmd)
{
	struct sockaddr_ieee802154 *sa =
		(struct sockaddr_ieee802154 *)&ifr->ifr_addr;
	u16 pan_id, short_addr;

	switch (cmd) {
	case SIOCGIFADDR:
		/* FIXME: fixed here, get from device IRL */
		pan_id = fake_get_pan_id(dev);
		short_addr = fake_get_short_addr(dev);
		if (pan_id == IEEE802154_PANID_BROADCAST ||
		    short_addr == IEEE802154_ADDR_BROADCAST)
			return -EADDRNOTAVAIL;

		sa->family = AF_IEEE802154;
		sa->addr.addr_type = IEEE802154_ADDR_SHORT;
		sa->addr.pan_id = pan_id;
		sa->addr.short_addr = short_addr;
		return 0;
	}
	return -ENOIOCTLCMD;
}

static int ieee802154_fake_mac_addr(struct net_device *dev, void *p)
{
	return -EBUSY; /* HW address is built into the device */
}

static const struct net_device_ops fake_ops = {
	.ndo_open		= ieee802154_fake_open,
	.ndo_stop		= ieee802154_fake_close,
	.ndo_start_xmit		= ieee802154_fake_xmit,
	.ndo_do_ioctl		= ieee802154_fake_ioctl,
	.ndo_set_mac_address	= ieee802154_fake_mac_addr,
};


static void ieee802154_fake_setup(struct net_device *dev)
{
	dev->addr_len		= IEEE802154_ADDR_LEN;
	memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN);
	dev->features		= NETIF_F_NO_CSUM;
	dev->needed_tailroom	= 2; /* FCS */
	dev->mtu		= 127;
	dev->tx_queue_len	= 10;
	dev->type		= ARPHRD_IEEE802154;
	dev->flags		= IFF_NOARP | IFF_BROADCAST;
	dev->watchdog_timeo	= 0;
}


static int __devinit ieee802154fake_probe(struct platform_device *pdev)
{
	struct net_device *dev =
		alloc_netdev(0, "hardwpan%d", ieee802154_fake_setup);
	int err;

	if (!dev)
		return -ENOMEM;

	memcpy(dev->dev_addr, "\xba\xbe\xca\xfe\xde\xad\xbe\xef",
			dev->addr_len);
	memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);

	dev->netdev_ops = &fake_ops;
	dev->ml_priv = &fake_mlme;

	/*
	 * If the name is a format string the caller wants us to do a
	 * name allocation.
	 */
	if (strchr(dev->name, '%')) {
		err = dev_alloc_name(dev, dev->name);
		if (err < 0)
			goto out;
	}

	SET_NETDEV_DEV(dev, &pdev->dev);

	platform_set_drvdata(pdev, dev);

	err = register_netdev(dev);
	if (err < 0)
		goto out;


	dev_info(&pdev->dev, "Added ieee802154 HardMAC hardware\n");
	return 0;

out:
	unregister_netdev(dev);
	return err;
}

static int __devexit ieee802154fake_remove(struct platform_device *pdev)
{
	struct net_device *dev = platform_get_drvdata(pdev);
	unregister_netdev(dev);
	free_netdev(dev);
	return 0;
}

static struct platform_device *ieee802154fake_dev;

static struct platform_driver ieee802154fake_driver = {
	.probe = ieee802154fake_probe,
	.remove = __devexit_p(ieee802154fake_remove),
	.driver = {
			.name = "ieee802154hardmac",
			.owner = THIS_MODULE,
	},
};

static __init int fake_init(void)
{
	ieee802154fake_dev = platform_device_register_simple(
			"ieee802154hardmac", -1, NULL, 0);
	return platform_driver_register(&ieee802154fake_driver);
}

static __exit void fake_exit(void)
{
	platform_driver_unregister(&ieee802154fake_driver);
	platform_device_unregister(ieee802154fake_dev);
}

module_init(fake_init);
module_exit(fake_exit);
MODULE_LICENSE("GPL");
Commit	Line	Data
8459464f SL	1	/*
	2	* Sample driver for HardMAC IEEE 802.15.4 devices
	3	*
	4	* Copyright (C) 2009 Siemens AG
	5	*
	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.
	9	*
	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.
	14	*
	15	* You should have received a copy of the GNU General Public License along
	16	* with this program; if not, write to the Free Software Foundation, Inc.,
	17	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	18	*
	19	* Written by:
	20	* Dmitry Eremin-Solenikov <dmitry.baryshkov@siemens.com>
	21	*/
	22	#include <linux/kernel.h>
	23	#include <linux/module.h>
	24	#include <linux/platform_device.h>
	25	#include <linux/netdevice.h>
	26	#include <linux/skbuff.h>
	27	#include <linux/if_arp.h>
	28
	29	#include <net/ieee802154/af_ieee802154.h>
	30	#include <net/ieee802154/netdevice.h>
	31	#include <net/ieee802154/mac_def.h>
	32	#include <net/ieee802154/nl802154.h>
	33
	34	static u16 fake_get_pan_id(struct net_device *dev)
	35	{
	36	BUG_ON(dev->type != ARPHRD_IEEE802154);
	37
	38	return 0xeba1;
	39	}
	40
	41	static u16 fake_get_short_addr(struct net_device *dev)
	42	{
	43	BUG_ON(dev->type != ARPHRD_IEEE802154);
	44
	45	return 0x1;
	46	}
	47
	48	static u8 fake_get_dsn(struct net_device *dev)
	49	{
	50	BUG_ON(dev->type != ARPHRD_IEEE802154);
	51
	52	return 0x00; /* DSN are implemented in HW, so return just 0 */
	53	}
	54
	55	static u8 fake_get_bsn(struct net_device *dev)
	56	{
	57	BUG_ON(dev->type != ARPHRD_IEEE802154);
	58
	59	return 0x00; /* BSN are implemented in HW, so return just 0 */
	60	}
	61
	62	static int fake_assoc_req(struct net_device *dev,
	63	struct ieee802154_addr *addr, u8 channel, u8 cap)
	64	{
65	/* We simply emulate it here */
66	return ieee802154_nl_assoc_confirm(dev, fake_get_short_addr(dev),
67	IEEE802154_SUCCESS);
68	}
69
70	static int fake_assoc_resp(struct net_device *dev,
71	struct ieee802154_addr *addr, u16 short_addr, u8 status)
72	{
73	return 0;
74	}
75
76	static int fake_disassoc_req(struct net_device *dev,
77	struct ieee802154_addr *addr, u8 reason)
78	{
79	return ieee802154_nl_disassoc_confirm(dev, IEEE802154_SUCCESS);
80	}
81
82	static int fake_start_req(struct net_device dev, struct ieee802154_addr addr,
83	u8 channel,
84	u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
85	u8 coord_realign)
86	{
87	return 0;
88	}
89
90	static int fake_scan_req(struct net_device *dev, u8 type, u32 channels,
91	u8 duration)
92	{
93	u8 edl[27] = {};
94	return ieee802154_nl_scan_confirm(dev, IEEE802154_SUCCESS, type,
95	channels,
96	type == IEEE802154_MAC_SCAN_ED ? edl : NULL);
97	}
98
99	static struct ieee802154_mlme_ops fake_mlme = {
100	.assoc_req = fake_assoc_req,
101	.assoc_resp = fake_assoc_resp,
102	.disassoc_req = fake_disassoc_req,
103	.start_req = fake_start_req,
104	.scan_req = fake_scan_req,
105
106	.get_pan_id = fake_get_pan_id,
107	.get_short_addr = fake_get_short_addr,
108	.get_dsn = fake_get_dsn,
109	.get_bsn = fake_get_bsn,
110	};
111
112	static int ieee802154_fake_open(struct net_device *dev)
113	{
114	netif_start_queue(dev);
115	return 0;
116	}
117
118	static int ieee802154_fake_close(struct net_device *dev)
119	{
120	netif_stop_queue(dev);
121	return 0;
122	}
123
124	static int ieee802154_fake_xmit(struct sk_buff skb, struct net_device dev)
125	{
126	skb->iif = dev->ifindex;
127	skb->dev = dev;
128	dev->stats.tx_packets++;
129	dev->stats.tx_bytes += skb->len;
130
131	dev->trans_start = jiffies;
132
133	/* FIXME: do hardware work here ... */
134
135	return 0;
136	}
137
138
139	static int ieee802154_fake_ioctl(struct net_device dev, struct ifreq ifr,
140	int cmd)
141	{
142	struct sockaddr_ieee802154 *sa =
143	(struct sockaddr_ieee802154 *)&ifr->ifr_addr;
144	u16 pan_id, short_addr;
145
146	switch (cmd) {
147	case SIOCGIFADDR:
148	/* FIXME: fixed here, get from device IRL */
149	pan_id = fake_get_pan_id(dev);
150	short_addr = fake_get_short_addr(dev);
151	if (pan_id == IEEE802154_PANID_BROADCAST \|\|
152	short_addr == IEEE802154_ADDR_BROADCAST)
153	return -EADDRNOTAVAIL;
154
155	sa->family = AF_IEEE802154;
156	sa->addr.addr_type = IEEE802154_ADDR_SHORT;
157	sa->addr.pan_id = pan_id;
158	sa->addr.short_addr = short_addr;
159	return 0;
160	}
161	return -ENOIOCTLCMD;
162	}
163
164	static int ieee802154_fake_mac_addr(struct net_device dev, void p)
165	{
166	return -EBUSY; /* HW address is built into the device */
167	}
168
169	static const struct net_device_ops fake_ops = {
170	.ndo_open = ieee802154_fake_open,
171	.ndo_stop = ieee802154_fake_close,
172	.ndo_start_xmit = ieee802154_fake_xmit,
173	.ndo_do_ioctl = ieee802154_fake_ioctl,
174	.ndo_set_mac_address = ieee802154_fake_mac_addr,
175	};
176
177
178	static void ieee802154_fake_setup(struct net_device *dev)
179	{
180	dev->addr_len = IEEE802154_ADDR_LEN;
181	memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN);
182	dev->features = NETIF_F_NO_CSUM;
183	dev->needed_tailroom = 2; /* FCS */
184	dev->mtu = 127;
185	dev->tx_queue_len = 10;
186	dev->type = ARPHRD_IEEE802154;
187	dev->flags = IFF_NOARP \| IFF_BROADCAST;
188	dev->watchdog_timeo = 0;
189	}
190
191
192	static int __devinit ieee802154fake_probe(struct platform_device *pdev)
193	{
194	struct net_device *dev =
195	alloc_netdev(0, "hardwpan%d", ieee802154_fake_setup);
196	int err;
197
198	if (!dev)
199	return -ENOMEM;
200
201	memcpy(dev->dev_addr, "\xba\xbe\xca\xfe\xde\xad\xbe\xef",
202	dev->addr_len);
203	memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
204
205	dev->netdev_ops = &fake_ops;
206	dev->ml_priv = &fake_mlme;
207
208	/*
209	* If the name is a format string the caller wants us to do a
210	* name allocation.
211	*/
212	if (strchr(dev->name, '%')) {
213	err = dev_alloc_name(dev, dev->name);
214	if (err < 0)
215	goto out;
216	}
217
218	SET_NETDEV_DEV(dev, &pdev->dev);
219
220	platform_set_drvdata(pdev, dev);
221
222	err = register_netdev(dev);
223	if (err < 0)
224	goto out;
225
226
227	dev_info(&pdev->dev, "Added ieee802154 HardMAC hardware\n");
228	return 0;
229
230	out:
231	unregister_netdev(dev);
232	return err;
233	}
234
235	static int __devexit ieee802154fake_remove(struct platform_device *pdev)
236	{
237	struct net_device *dev = platform_get_drvdata(pdev);
238	unregister_netdev(dev);
239	free_netdev(dev);
240	return 0;
241	}
242
243	static struct platform_device *ieee802154fake_dev;
244
245	static struct platform_driver ieee802154fake_driver = {
246	.probe = ieee802154fake_probe,
247	.remove = __devexit_p(ieee802154fake_remove),
248	.driver = {
249	.name = "ieee802154hardmac",
250	.owner = THIS_MODULE,
251	},
252	};
253
254	static __init int fake_init(void)
255	{
256	ieee802154fake_dev = platform_device_register_simple(
257	"ieee802154hardmac", -1, NULL, 0);
258	return platform_driver_register(&ieee802154fake_driver);
259	}
260
261	static __exit void fake_exit(void)
262	{
263	platform_driver_unregister(&ieee802154fake_driver);
264	platform_device_unregister(ieee802154fake_dev);
265	}
266
267	module_init(fake_init);
268	module_exit(fake_exit);
269	MODULE_LICENSE("GPL");
270