[GitHub/mt8127/android_kernel_alcatel_ttab.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 wpan_phy *net_to_phy(struct net_device *dev)
{
	return container_of(dev->dev.parent, struct wpan_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(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(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(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(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 = net_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 = net_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_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)
{
	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 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 = net_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 wpan_phy *phy = wpan_phy_alloc(0);
	int err;

	if (!phy)
		return -ENOMEM;

	dev = alloc_netdev(0, "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);

	phy->channels_supported = (1 << 27) - 1;
	phy->transmit_power = 0xbf;

	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, &phy->dev);

	platform_set_drvdata(pdev, dev);

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