[net-next-2.6.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/af_ieee802154.h>
#include <net/ieee802154_netdev.h>
#include <net/ieee802154.h>
#include <net/nl802154.h>
#include <net/wpan-phy.h>

struct fakehard_priv {
	struct wpan_phy *phy;
};

static struct wpan_phy *fake_to_phy(const struct net_device *dev)
{
	struct fakehard_priv *priv = netdev_priv(dev);
	return priv->phy;
}

/**
 * fake_get_phy - Return a phy corresponding to this device.
 * @dev: The network device for which to return the wan-phy object
 *
 * This function returns a wpan-phy object corresponding to the passed
 * network device. Reference counter for wpan-phy object is incremented,
 * so when the wpan-phy isn't necessary, you should drop the reference
 * via @wpan_phy_put() call.
 */
static struct wpan_phy *fake_get_phy(const struct net_device *dev)
{
	struct wpan_phy *phy = fake_to_phy(dev);
	return to_phy(get_device(&phy->dev));
}

/**
 * fake_get_pan_id - Retrieve the PAN ID of the device.
 * @dev: The network device to retrieve the PAN of.
 *
 * Return the ID of the PAN from the PIB.
 */
static u16 fake_get_pan_id(const struct net_device *dev)
{
	BUG_ON(dev->type != ARPHRD_IEEE802154);

	return 0xeba1;
}

/**
 * fake_get_short_addr - Retrieve the short address of the device.
 * @dev: The network device to retrieve the short address of.
 *
 * Returns the IEEE 802.15.4 short-form address cached for this
 * device. If the device has not yet had a short address assigned
 * then this should return 0xFFFF to indicate a lack of association.
 */
static u16 fake_get_short_addr(const struct net_device *dev)
{
	BUG_ON(dev->type != ARPHRD_IEEE802154);

	return 0x1;
}

/**
 * fake_get_dsn - Retrieve the DSN of the device.
 * @dev: The network device to retrieve the DSN for.
 *
 * Returns the IEEE 802.15.4 DSN for the network device.
 * The DSN is the sequence number which will be added to each
 * packet or MAC command frame by the MAC during transmission.
 *
 * DSN means 'Data Sequence Number'.
 *
 * Note: This is in section 7.2.1.2 of the IEEE 802.15.4-2006
 *       document.
 */
static u8 fake_get_dsn(const struct net_device *dev)
{
	BUG_ON(dev->type != ARPHRD_IEEE802154);

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

/**
 * fake_get_bsn - Retrieve the BSN of the device.
 * @dev: The network device to retrieve the BSN for.
 *
 * Returns the IEEE 802.15.4 BSN for the network device.
 * The BSN is the sequence number which will be added to each
 * beacon frame sent by the MAC.
 *
 * BSN means 'Beacon Sequence Number'.
 *
 * Note: This is in section 7.2.1.2 of the IEEE 802.15.4-2006
 *       document.
 */
static u8 fake_get_bsn(const struct net_device *dev)
{
	BUG_ON(dev->type != ARPHRD_IEEE802154);

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

/**
 * fake_assoc_req - Make an association request to the HW.
 * @dev: The network device which we are associating to a network.
 * @addr: The coordinator with which we wish to associate.
 * @channel: The channel on which to associate.
 * @cap: The capability information field to use in the association.
 *
 * Start an association with a coordinator. The coordinator's address
 * and PAN ID can be found in @addr.
 *
 * Note: This is in section 7.3.1 and 7.5.3.1 of the IEEE
 *       802.15.4-2006 document.
 */
static int fake_assoc_req(struct net_device *dev,
		struct ieee802154_addr *addr, u8 channel, u8 page, u8 cap)
{
	struct wpan_phy *phy = fake_to_phy(dev);

	mutex_lock(&phy->pib_lock);
	phy->current_channel = channel;
	phy->current_page = page;
	mutex_unlock(&phy->pib_lock);

	/* We simply emulate it here */
	return ieee802154_nl_assoc_confirm(dev, fake_get_short_addr(dev),
			IEEE802154_SUCCESS);
}

/**
 * fake_assoc_resp - Send an association response to a device.
 * @dev: The network device on which to send the response.
 * @addr: The address of the device to respond to.
 * @short_addr: The assigned short address for the device (if any).
 * @status: The result of the association request.
 *
 * Queue the association response of the coordinator to another
 * device's attempt to associate with the network which we
 * coordinate. This is then added to the indirect-send queue to be
 * transmitted to the end device when it polls for data.
 *
 * Note: This is in section 7.3.2 and 7.5.3.1 of the IEEE
 *       802.15.4-2006 document.
 */
static int fake_assoc_resp(struct net_device *dev,
		struct ieee802154_addr *addr, u16 short_addr, u8 status)
{
	return 0;
}

/**
 * fake_disassoc_req - Disassociate a device from a network.
 * @dev: The network device on which we're disassociating a device.
 * @addr: The device to disassociate from the network.
 * @reason: The reason to give to the device for being disassociated.
 *
 * This sends a disassociation notification to the device being
 * disassociated from the network.
 *
 * Note: This is in section 7.5.3.2 of the IEEE 802.15.4-2006
 *       document, with the reason described in 7.3.3.2.
 */
static int fake_disassoc_req(struct net_device *dev,
		struct ieee802154_addr *addr, u8 reason)
{
	return ieee802154_nl_disassoc_confirm(dev, IEEE802154_SUCCESS);
}

/**
 * fake_start_req - Start an IEEE 802.15.4 PAN.
 * @dev: The network device on which to start the PAN.
 * @addr: The coordinator address to use when starting the PAN.
 * @channel: The channel on which to start the PAN.
 * @bcn_ord: Beacon order.
 * @sf_ord: Superframe order.
 * @pan_coord: Whether or not we are the PAN coordinator or just
 *             requesting a realignment perhaps?
 * @blx: Battery Life Extension feature bitfield.
 * @coord_realign: Something to realign something else.
 *
 * If pan_coord is non-zero then this starts a network with the
 * provided parameters, otherwise it attempts a coordinator
 * realignment of the stated network instead.
 *
 * Note: This is in section 7.5.2.3 of the IEEE 802.15.4-2006
 * document, with 7.3.8 describing coordinator realignment.
 */
static int fake_start_req(struct net_device *dev, struct ieee802154_addr *addr,
				u8 channel, u8 page,
				u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
				u8 coord_realign)
{
	struct wpan_phy *phy = fake_to_phy(dev);

	mutex_lock(&phy->pib_lock);
	phy->current_channel = channel;
	phy->current_page = page;
	mutex_unlock(&phy->pib_lock);

	/* We don't emulate beacons here at all, so START should fail */
	ieee802154_nl_start_confirm(dev, IEEE802154_INVALID_PARAMETER);
	return 0;
}

/**
 * fake_scan_req - Start a channel scan.
 * @dev: The network device on which to perform a channel scan.
 * @type: The type of scan to perform.
 * @channels: The channel bitmask to scan.
 * @duration: How long to spend on each channel.
 *
 * This starts either a passive (energy) scan or an active (PAN) scan
 * on the channels indicated in the @channels bitmask. The duration of
 * the scan is measured in terms of superframe duration. Specifically,
 * the scan will spend aBaseSuperFrameDuration * ((2^n) + 1) on each
 * channel.
 *
 * Note: This is in section 7.5.2.1 of the IEEE 802.15.4-2006 document.
 */
static int fake_scan_req(struct net_device *dev, u8 type, u32 channels,
		u8 page, u8 duration)
{
	u8 edl[27] = {};
	return ieee802154_nl_scan_confirm(dev, IEEE802154_SUCCESS, type,
			channels, page,
			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_phy = fake_get_phy,

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

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

	dev_kfree_skb(skb);
	return NETDEV_TX_OK;
}


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_destruct(struct net_device *dev)
{
	struct wpan_phy *phy = fake_to_phy(dev);

	wpan_phy_unregister(phy);
	free_netdev(dev);
	wpan_phy_free(phy);
}

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;
	dev->destructor		= ieee802154_fake_destruct;
}


static int __devinit ieee802154fake_probe(struct platform_device *pdev)
{
	struct net_device *dev;
	struct fakehard_priv *priv;
	struct wpan_phy *phy = wpan_phy_alloc(0);
	int err;

	if (!phy)
		return -ENOMEM;

	dev = alloc_netdev(sizeof(struct fakehard_priv), "hardwpan%d", ieee802154_fake_setup);
	if (!dev) {
		wpan_phy_free(phy);
		return -ENOMEM;
	}

	phy->dev.platform_data = dev;

	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);

	/*
	 * For now we'd like to emulate 2.4 GHz-only device,
	 * both O-QPSK and CSS
	 */
	/* 2.4 GHz O-QPSK 802.15.4-2003 */
	phy->channels_supported[0] |= 0x7FFF800;
	/* 2.4 GHz CSS 802.15.4a-2007 */
	phy->channels_supported[3] |= 0x3fff;

	phy->transmit_power = 0xbf;

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

	priv = netdev_priv(dev);
	priv->phy = phy;

	/*
	 * 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;
	}

	wpan_phy_set_dev(phy, &pdev->dev);
	SET_NETDEV_DEV(dev, &phy->dev);

	platform_set_drvdata(pdev, dev);

	err = wpan_phy_register(phy);
	if (err)
		goto out;

	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);
	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
f0166e5e DES	29	#include <net/af_ieee802154.h>
	30	#include <net/ieee802154_netdev.h>
	31	#include <net/ieee802154.h>
	32	#include <net/nl802154.h>
81f95103 DES	33	#include <net/wpan-phy.h>
81f95103 DES	34
405cd39f DES	35	struct fakehard_priv {
	36	struct wpan_phy *phy;
	37	};
	38
	39	static struct wpan_phy fake_to_phy(const struct net_device dev)
	40	{
	41	struct fakehard_priv *priv = netdev_priv(dev);
	42	return priv->phy;
	43	}
	44
	45	/**
	46	* fake_get_phy - Return a phy corresponding to this device.
	47	* @dev: The network device for which to return the wan-phy object
	48	*
	49	* This function returns a wpan-phy object corresponding to the passed
	50	* network device. Reference counter for wpan-phy object is incremented,
	51	* so when the wpan-phy isn't necessary, you should drop the reference
	52	* via @wpan_phy_put() call.
	53	*/
	54	static struct wpan_phy fake_get_phy(const struct net_device dev)
81f95103	55	{
405cd39f DES	56	struct wpan_phy *phy = fake_to_phy(dev);
405cd39f DES	57	return to_phy(get_device(&phy->dev));
81f95103	58	}
8459464f	59
878fa89f DS	60	/**
	61	* fake_get_pan_id - Retrieve the PAN ID of the device.
	62	* @dev: The network device to retrieve the PAN of.
	63	*
	64	* Return the ID of the PAN from the PIB.
	65	*/
a9966b58	66	static u16 fake_get_pan_id(const struct net_device *dev)
8459464f SL	67	{
	68	BUG_ON(dev->type != ARPHRD_IEEE802154);
	69
	70	return 0xeba1;
	71	}
	72
878fa89f DS	73	/**
	74	* fake_get_short_addr - Retrieve the short address of the device.
	75	* @dev: The network device to retrieve the short address of.
	76	*
	77	* Returns the IEEE 802.15.4 short-form address cached for this
	78	* device. If the device has not yet had a short address assigned
	79	* then this should return 0xFFFF to indicate a lack of association.
	80	*/
a9966b58	81	static u16 fake_get_short_addr(const struct net_device *dev)
8459464f SL	82	{
	83	BUG_ON(dev->type != ARPHRD_IEEE802154);
	84
	85	return 0x1;
	86	}
	87
878fa89f DS	88	/**
	89	* fake_get_dsn - Retrieve the DSN of the device.
	90	* @dev: The network device to retrieve the DSN for.
	91	*
	92	* Returns the IEEE 802.15.4 DSN for the network device.
	93	* The DSN is the sequence number which will be added to each
	94	* packet or MAC command frame by the MAC during transmission.
	95	*
	96	* DSN means 'Data Sequence Number'.
	97	*
	98	* Note: This is in section 7.2.1.2 of the IEEE 802.15.4-2006
	99	* document.
	100	*/
a9966b58	101	static u8 fake_get_dsn(const struct net_device *dev)
8459464f SL	102	{
	103	BUG_ON(dev->type != ARPHRD_IEEE802154);
	104
	105	return 0x00; /* DSN are implemented in HW, so return just 0 */
	106	}
	107
878fa89f DS	108	/**
	109	* fake_get_bsn - Retrieve the BSN of the device.
	110	* @dev: The network device to retrieve the BSN for.
	111	*
	112	* Returns the IEEE 802.15.4 BSN for the network device.
	113	* The BSN is the sequence number which will be added to each
	114	* beacon frame sent by the MAC.
	115	*
	116	* BSN means 'Beacon Sequence Number'.
	117	*
	118	* Note: This is in section 7.2.1.2 of the IEEE 802.15.4-2006
	119	* document.
	120	*/
a9966b58	121	static u8 fake_get_bsn(const struct net_device *dev)
8459464f SL	122	{
	123	BUG_ON(dev->type != ARPHRD_IEEE802154);
	124
	125	return 0x00; /* BSN are implemented in HW, so return just 0 */
	126	}
	127
878fa89f DS	128	/**
	129	* fake_assoc_req - Make an association request to the HW.
	130	* @dev: The network device which we are associating to a network.
	131	* @addr: The coordinator with which we wish to associate.
	132	* @channel: The channel on which to associate.
	133	* @cap: The capability information field to use in the association.
	134	*
	135	* Start an association with a coordinator. The coordinator's address
	136	* and PAN ID can be found in @addr.
	137	*
	138	* Note: This is in section 7.3.1 and 7.5.3.1 of the IEEE
	139	* 802.15.4-2006 document.
	140	*/
8459464f	141	static int fake_assoc_req(struct net_device *dev,
16eea493	142	struct ieee802154_addr *addr, u8 channel, u8 page, u8 cap)
8459464f	143	{
405cd39f	144	struct wpan_phy *phy = fake_to_phy(dev);
81f95103 DES	145
	146	mutex_lock(&phy->pib_lock);
	147	phy->current_channel = channel;
16eea493	148	phy->current_page = page;
81f95103 DES	149	mutex_unlock(&phy->pib_lock);
81f95103 DES	150
8459464f SL	151	/* We simply emulate it here */
	152	return ieee802154_nl_assoc_confirm(dev, fake_get_short_addr(dev),
	153	IEEE802154_SUCCESS);
	154	}
	155
878fa89f DS	156	/**
	157	* fake_assoc_resp - Send an association response to a device.
	158	* @dev: The network device on which to send the response.
	159	* @addr: The address of the device to respond to.
	160	* @short_addr: The assigned short address for the device (if any).
	161	* @status: The result of the association request.
	162	*
	163	* Queue the association response of the coordinator to another
	164	* device's attempt to associate with the network which we
	165	* coordinate. This is then added to the indirect-send queue to be
	166	* transmitted to the end device when it polls for data.
	167	*
	168	* Note: This is in section 7.3.2 and 7.5.3.1 of the IEEE
	169	* 802.15.4-2006 document.
	170	*/
8459464f SL	171	static int fake_assoc_resp(struct net_device *dev,
	172	struct ieee802154_addr *addr, u16 short_addr, u8 status)
	173	{
	174	return 0;
	175	}
	176
878fa89f DS	177	/**
	178	* fake_disassoc_req - Disassociate a device from a network.
	179	* @dev: The network device on which we're disassociating a device.
	180	* @addr: The device to disassociate from the network.
	181	* @reason: The reason to give to the device for being disassociated.
	182	*
	183	* This sends a disassociation notification to the device being
	184	* disassociated from the network.
	185	*
	186	* Note: This is in section 7.5.3.2 of the IEEE 802.15.4-2006
	187	* document, with the reason described in 7.3.3.2.
	188	*/
8459464f SL	189	static int fake_disassoc_req(struct net_device *dev,
	190	struct ieee802154_addr *addr, u8 reason)
	191	{
	192	return ieee802154_nl_disassoc_confirm(dev, IEEE802154_SUCCESS);
	193	}
	194
878fa89f DS	195	/**
	196	* fake_start_req - Start an IEEE 802.15.4 PAN.
	197	* @dev: The network device on which to start the PAN.
	198	* @addr: The coordinator address to use when starting the PAN.
	199	* @channel: The channel on which to start the PAN.
	200	* @bcn_ord: Beacon order.
	201	* @sf_ord: Superframe order.
	202	* @pan_coord: Whether or not we are the PAN coordinator or just
	203	* requesting a realignment perhaps?
	204	* @blx: Battery Life Extension feature bitfield.
	205	* @coord_realign: Something to realign something else.
	206	*
	207	* If pan_coord is non-zero then this starts a network with the
	208	* provided parameters, otherwise it attempts a coordinator
	209	* realignment of the stated network instead.
	210	*
	211	* Note: This is in section 7.5.2.3 of the IEEE 802.15.4-2006
	212	* document, with 7.3.8 describing coordinator realignment.
878fa89f	213	*/
8459464f	214	static int fake_start_req(struct net_device dev, struct ieee802154_addr addr,
16eea493	215	u8 channel, u8 page,
8459464f SL	216	u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
	217	u8 coord_realign)
	218	{
405cd39f	219	struct wpan_phy *phy = fake_to_phy(dev);
81f95103 DES	220
	221	mutex_lock(&phy->pib_lock);
	222	phy->current_channel = channel;
16eea493	223	phy->current_page = page;
81f95103 DES	224	mutex_unlock(&phy->pib_lock);
81f95103 DES	225
798c752b DES	226	/* We don't emulate beacons here at all, so START should fail */
798c752b DES	227	ieee802154_nl_start_confirm(dev, IEEE802154_INVALID_PARAMETER);
8459464f SL	228	return 0;
	229	}
	230
878fa89f DS	231	/**
	232	* fake_scan_req - Start a channel scan.
	233	* @dev: The network device on which to perform a channel scan.
	234	* @type: The type of scan to perform.
	235	* @channels: The channel bitmask to scan.
	236	* @duration: How long to spend on each channel.
	237	*
	238	* This starts either a passive (energy) scan or an active (PAN) scan
	239	* on the channels indicated in the @channels bitmask. The duration of
	240	* the scan is measured in terms of superframe duration. Specifically,
	241	* the scan will spend aBaseSuperFrameDuration * ((2^n) + 1) on each
	242	* channel.
	243	*
	244	* Note: This is in section 7.5.2.1 of the IEEE 802.15.4-2006 document.
	245	*/
8459464f	246	static int fake_scan_req(struct net_device *dev, u8 type, u32 channels,
16eea493	247	u8 page, u8 duration)
8459464f SL	248	{
	249	u8 edl[27] = {};
	250	return ieee802154_nl_scan_confirm(dev, IEEE802154_SUCCESS, type,
16eea493	251	channels, page,
8459464f SL	252	type == IEEE802154_MAC_SCAN_ED ? edl : NULL);
	253	}
	254
	255	static struct ieee802154_mlme_ops fake_mlme = {
	256	.assoc_req = fake_assoc_req,
	257	.assoc_resp = fake_assoc_resp,
	258	.disassoc_req = fake_disassoc_req,
	259	.start_req = fake_start_req,
	260	.scan_req = fake_scan_req,
	261
405cd39f DES	262	.get_phy = fake_get_phy,
405cd39f DES	263
8459464f SL	264	.get_pan_id = fake_get_pan_id,
	265	.get_short_addr = fake_get_short_addr,
	266	.get_dsn = fake_get_dsn,
	267	.get_bsn = fake_get_bsn,
	268	};
	269
	270	static int ieee802154_fake_open(struct net_device *dev)
	271	{
	272	netif_start_queue(dev);
	273	return 0;
	274	}
	275
	276	static int ieee802154_fake_close(struct net_device *dev)
	277	{
	278	netif_stop_queue(dev);
	279	return 0;
	280	}
	281
61357325 SH	282	static netdev_tx_t ieee802154_fake_xmit(struct sk_buff *skb,
61357325 SH	283	struct net_device *dev)
8459464f	284	{
8459464f SL	285	dev->stats.tx_packets++;
	286	dev->stats.tx_bytes += skb->len;
	287
8459464f SL	288	/* FIXME: do hardware work here ... */
8459464f SL	289
56cf5483	290	dev_kfree_skb(skb);
6ed10654	291	return NETDEV_TX_OK;
8459464f SL	292	}
	293
	294
	295	static int ieee802154_fake_ioctl(struct net_device dev, struct ifreq ifr,
	296	int cmd)
	297	{
	298	struct sockaddr_ieee802154 *sa =
	299	(struct sockaddr_ieee802154 *)&ifr->ifr_addr;
	300	u16 pan_id, short_addr;
	301
	302	switch (cmd) {
	303	case SIOCGIFADDR:
	304	/* FIXME: fixed here, get from device IRL */
	305	pan_id = fake_get_pan_id(dev);
	306	short_addr = fake_get_short_addr(dev);
	307	if (pan_id == IEEE802154_PANID_BROADCAST \|\|
	308	short_addr == IEEE802154_ADDR_BROADCAST)
	309	return -EADDRNOTAVAIL;
	310
	311	sa->family = AF_IEEE802154;
	312	sa->addr.addr_type = IEEE802154_ADDR_SHORT;
	313	sa->addr.pan_id = pan_id;
	314	sa->addr.short_addr = short_addr;
	315	return 0;
	316	}
	317	return -ENOIOCTLCMD;
	318	}
	319
	320	static int ieee802154_fake_mac_addr(struct net_device dev, void p)
	321	{
	322	return -EBUSY; /* HW address is built into the device */
	323	}
	324
	325	static const struct net_device_ops fake_ops = {
	326	.ndo_open = ieee802154_fake_open,
	327	.ndo_stop = ieee802154_fake_close,
	328	.ndo_start_xmit = ieee802154_fake_xmit,
	329	.ndo_do_ioctl = ieee802154_fake_ioctl,
	330	.ndo_set_mac_address = ieee802154_fake_mac_addr,
	331	};
	332
81f95103 DES	333	static void ieee802154_fake_destruct(struct net_device *dev)
81f95103 DES	334	{
405cd39f	335	struct wpan_phy *phy = fake_to_phy(dev);
81f95103 DES	336
	337	wpan_phy_unregister(phy);
	338	free_netdev(dev);
	339	wpan_phy_free(phy);
	340	}
8459464f SL	341
	342	static void ieee802154_fake_setup(struct net_device *dev)
	343	{
	344	dev->addr_len = IEEE802154_ADDR_LEN;
	345	memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN);
	346	dev->features = NETIF_F_NO_CSUM;
	347	dev->needed_tailroom = 2; /* FCS */
	348	dev->mtu = 127;
	349	dev->tx_queue_len = 10;
	350	dev->type = ARPHRD_IEEE802154;
	351	dev->flags = IFF_NOARP \| IFF_BROADCAST;
	352	dev->watchdog_timeo = 0;
81f95103	353	dev->destructor = ieee802154_fake_destruct;
8459464f SL	354	}
	355
	356
	357	static int __devinit ieee802154fake_probe(struct platform_device *pdev)
	358	{
81f95103	359	struct net_device *dev;
405cd39f	360	struct fakehard_priv *priv;
81f95103	361	struct wpan_phy *phy = wpan_phy_alloc(0);
8459464f SL	362	int err;
8459464f SL	363
81f95103 DES	364	if (!phy)
	365	return -ENOMEM;
	366
405cd39f	367	dev = alloc_netdev(sizeof(struct fakehard_priv), "hardwpan%d", ieee802154_fake_setup);
81f95103 DES	368	if (!dev) {
81f95103 DES	369	wpan_phy_free(phy);
8459464f	370	return -ENOMEM;
81f95103 DES	371	}
	372
	373	phy->dev.platform_data = dev;
8459464f SL	374
	375	memcpy(dev->dev_addr, "\xba\xbe\xca\xfe\xde\xad\xbe\xef",
	376	dev->addr_len);
	377	memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
	378
478e87c2 DES	379	/*
	380	* For now we'd like to emulate 2.4 GHz-only device,
	381	* both O-QPSK and CSS
	382	*/
	383	/* 2.4 GHz O-QPSK 802.15.4-2003 */
	384	phy->channels_supported[0] \|= 0x7FFF800;
	385	/* 2.4 GHz CSS 802.15.4a-2007 */
	386	phy->channels_supported[3] \|= 0x3fff;
	387
81f95103 DES	388	phy->transmit_power = 0xbf;
81f95103 DES	389
8459464f SL	390	dev->netdev_ops = &fake_ops;
	391	dev->ml_priv = &fake_mlme;
	392
405cd39f DES	393	priv = netdev_priv(dev);
	394	priv->phy = phy;
	395
8459464f SL	396	/*
	397	* If the name is a format string the caller wants us to do a
	398	* name allocation.
	399	*/
	400	if (strchr(dev->name, '%')) {
	401	err = dev_alloc_name(dev, dev->name);
	402	if (err < 0)
	403	goto out;
	404	}
	405
e9cf356c	406	wpan_phy_set_dev(phy, &pdev->dev);
81f95103	407	SET_NETDEV_DEV(dev, &phy->dev);
8459464f SL	408
	409	platform_set_drvdata(pdev, dev);
	410
e9cf356c	411	err = wpan_phy_register(phy);
81f95103 DES	412	if (err)
	413	goto out;
	414
8459464f SL	415	err = register_netdev(dev);
	416	if (err < 0)
	417	goto out;
	418
8459464f SL	419	dev_info(&pdev->dev, "Added ieee802154 HardMAC hardware\n");
	420	return 0;
	421
	422	out:
	423	unregister_netdev(dev);
	424	return err;
	425	}
	426
	427	static int __devexit ieee802154fake_remove(struct platform_device *pdev)
	428	{
	429	struct net_device *dev = platform_get_drvdata(pdev);
	430	unregister_netdev(dev);
8459464f SL	431	return 0;
	432	}
	433
	434	static struct platform_device *ieee802154fake_dev;
	435
	436	static struct platform_driver ieee802154fake_driver = {
	437	.probe = ieee802154fake_probe,
	438	.remove = __devexit_p(ieee802154fake_remove),
	439	.driver = {
	440	.name = "ieee802154hardmac",
	441	.owner = THIS_MODULE,
	442	},
	443	};
	444
	445	static __init int fake_init(void)
	446	{
	447	ieee802154fake_dev = platform_device_register_simple(
	448	"ieee802154hardmac", -1, NULL, 0);
	449	return platform_driver_register(&ieee802154fake_driver);
	450	}
	451
	452	static __exit void fake_exit(void)
	453	{
	454	platform_driver_unregister(&ieee802154fake_driver);
	455	platform_device_unregister(ieee802154fake_dev);
	456	}
	457
	458	module_init(fake_init);
	459	module_exit(fake_exit);
	460	MODULE_LICENSE("GPL");
	461