+++ /dev/null
-/*
- * 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 <linux/ieee802154.h>
-
-#include <net/af_ieee802154.h>
-#include <net/ieee802154_netdev.h>
-#include <net/nl802154.h>
-#include <net/cfg802154.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 __le16 fake_get_pan_id(const struct net_device *dev)
-{
- BUG_ON(dev->type != ARPHRD_IEEE802154);
-
- return cpu_to_le16(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 __le16 fake_get_short_addr(const struct net_device *dev)
-{
- BUG_ON(dev->type != ARPHRD_IEEE802154);
-
- return cpu_to_le16(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_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, __le16 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,
-};
-
-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 = le16_to_cpu(fake_get_pan_id(dev));
- short_addr = le16_to_cpu(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_HW_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 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",
- NET_NAME_UNKNOWN, ieee802154_fake_setup);
- if (!dev) {
- wpan_phy_free(phy);
- return -ENOMEM;
- }
-
- memcpy(dev->dev_addr, "\xba\xbe\xca\xfe\xde\xad\xbe\xef",
- 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;
-
- 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 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 = 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");
projects / karo-tx-linux.git / commitdiff