diff options
Diffstat (limited to 'net/mac802154/ieee802154_dev.c')
| -rw-r--r-- | net/mac802154/ieee802154_dev.c | 415 |
1 files changed, 0 insertions, 415 deletions
diff --git a/net/mac802154/ieee802154_dev.c b/net/mac802154/ieee802154_dev.c deleted file mode 100644 index b36b2b996578..000000000000 --- a/net/mac802154/ieee802154_dev.c +++ /dev/null @@ -1,415 +0,0 @@ -/* - * Copyright (C) 2007-2012 Siemens AG - * - * Written by: - * Alexander Smirnov <alex.bluesman.smirnov@gmail.com> - * - * Based on the code from 'linux-zigbee.sourceforge.net' project. - * - * 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. - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/netdevice.h> - -#include <net/netlink.h> -#include <linux/nl802154.h> -#include <net/mac802154.h> -#include <net/ieee802154_netdev.h> -#include <net/route.h> -#include <net/wpan-phy.h> - -#include "mac802154.h" - -int mac802154_slave_open(struct net_device *dev) -{ - struct mac802154_sub_if_data *priv = netdev_priv(dev); - struct mac802154_sub_if_data *subif; - struct mac802154_priv *ipriv = priv->hw; - int res = 0; - - ASSERT_RTNL(); - - if (priv->type == IEEE802154_DEV_WPAN) { - mutex_lock(&priv->hw->slaves_mtx); - list_for_each_entry(subif, &priv->hw->slaves, list) { - if (subif != priv && subif->type == priv->type && - subif->running) { - mutex_unlock(&priv->hw->slaves_mtx); - return -EBUSY; - } - } - mutex_unlock(&priv->hw->slaves_mtx); - } - - mutex_lock(&priv->hw->slaves_mtx); - priv->running = true; - mutex_unlock(&priv->hw->slaves_mtx); - - if (ipriv->open_count++ == 0) { - res = ipriv->ops->start(&ipriv->hw); - WARN_ON(res); - if (res) - goto err; - } - - if (ipriv->ops->ieee_addr) { - __le64 addr = ieee802154_devaddr_from_raw(dev->dev_addr); - - res = ipriv->ops->ieee_addr(&ipriv->hw, addr); - WARN_ON(res); - if (res) - goto err; - mac802154_dev_set_ieee_addr(dev); - } - - netif_start_queue(dev); - return 0; -err: - priv->hw->open_count--; - - return res; -} - -int mac802154_slave_close(struct net_device *dev) -{ - struct mac802154_sub_if_data *priv = netdev_priv(dev); - struct mac802154_priv *ipriv = priv->hw; - - ASSERT_RTNL(); - - netif_stop_queue(dev); - - mutex_lock(&priv->hw->slaves_mtx); - priv->running = false; - mutex_unlock(&priv->hw->slaves_mtx); - - if (!--ipriv->open_count) - ipriv->ops->stop(&ipriv->hw); - - return 0; -} - -static int -mac802154_netdev_register(struct wpan_phy *phy, struct net_device *dev) -{ - struct mac802154_sub_if_data *priv; - struct mac802154_priv *ipriv; - int err; - - ipriv = wpan_phy_priv(phy); - - priv = netdev_priv(dev); - priv->dev = dev; - priv->hw = ipriv; - - dev->needed_headroom = ipriv->hw.extra_tx_headroom; - - SET_NETDEV_DEV(dev, &ipriv->phy->dev); - - mutex_lock(&ipriv->slaves_mtx); - if (!ipriv->running) { - mutex_unlock(&ipriv->slaves_mtx); - return -ENODEV; - } - mutex_unlock(&ipriv->slaves_mtx); - - err = register_netdev(dev); - if (err < 0) - return err; - - rtnl_lock(); - mutex_lock(&ipriv->slaves_mtx); - list_add_tail_rcu(&priv->list, &ipriv->slaves); - mutex_unlock(&ipriv->slaves_mtx); - rtnl_unlock(); - - return 0; -} - -static void -mac802154_del_iface(struct wpan_phy *phy, struct net_device *dev) -{ - struct mac802154_sub_if_data *sdata; - - ASSERT_RTNL(); - - sdata = netdev_priv(dev); - - BUG_ON(sdata->hw->phy != phy); - - mutex_lock(&sdata->hw->slaves_mtx); - list_del_rcu(&sdata->list); - mutex_unlock(&sdata->hw->slaves_mtx); - - synchronize_rcu(); - unregister_netdevice(sdata->dev); -} - -static struct net_device * -mac802154_add_iface(struct wpan_phy *phy, const char *name, int type) -{ - struct net_device *dev; - int err = -ENOMEM; - - switch (type) { - case IEEE802154_DEV_MONITOR: - dev = alloc_netdev(sizeof(struct mac802154_sub_if_data), - name, NET_NAME_UNKNOWN, - mac802154_monitor_setup); - break; - case IEEE802154_DEV_WPAN: - dev = alloc_netdev(sizeof(struct mac802154_sub_if_data), - name, NET_NAME_UNKNOWN, - mac802154_wpan_setup); - break; - default: - dev = NULL; - err = -EINVAL; - break; - } - if (!dev) - goto err; - - err = mac802154_netdev_register(phy, dev); - if (err) - goto err_free; - - dev_hold(dev); /* we return an incremented device refcount */ - return dev; - -err_free: - free_netdev(dev); -err: - return ERR_PTR(err); -} - -static int mac802154_set_txpower(struct wpan_phy *phy, int db) -{ - struct mac802154_priv *priv = wpan_phy_priv(phy); - - return priv->ops->set_txpower(&priv->hw, db); -} - -static int mac802154_set_lbt(struct wpan_phy *phy, bool on) -{ - struct mac802154_priv *priv = wpan_phy_priv(phy); - - return priv->ops->set_lbt(&priv->hw, on); -} - -static int mac802154_set_cca_mode(struct wpan_phy *phy, u8 mode) -{ - struct mac802154_priv *priv = wpan_phy_priv(phy); - - return priv->ops->set_cca_mode(&priv->hw, mode); -} - -static int mac802154_set_cca_ed_level(struct wpan_phy *phy, s32 level) -{ - struct mac802154_priv *priv = wpan_phy_priv(phy); - - return priv->ops->set_cca_ed_level(&priv->hw, level); -} - -static int mac802154_set_csma_params(struct wpan_phy *phy, u8 min_be, - u8 max_be, u8 retries) -{ - struct mac802154_priv *priv = wpan_phy_priv(phy); - - return priv->ops->set_csma_params(&priv->hw, min_be, max_be, retries); -} - -static int mac802154_set_frame_retries(struct wpan_phy *phy, s8 retries) -{ - struct mac802154_priv *priv = wpan_phy_priv(phy); - - return priv->ops->set_frame_retries(&priv->hw, retries); -} - -struct ieee802154_dev * -ieee802154_alloc_device(size_t priv_data_len, struct ieee802154_ops *ops) -{ - struct wpan_phy *phy; - struct mac802154_priv *priv; - size_t priv_size; - - if (!ops || !ops->xmit || !ops->ed || !ops->start || - !ops->stop || !ops->set_channel) { - pr_err("undefined IEEE802.15.4 device operations\n"); - return NULL; - } - - /* Ensure 32-byte alignment of our private data and hw private data. - * We use the wpan_phy priv data for both our mac802154_priv and for - * the driver's private data - * - * in memory it'll be like this: - * - * +-----------------------+ - * | struct wpan_phy | - * +-----------------------+ - * | struct mac802154_priv | - * +-----------------------+ - * | driver's private data | - * +-----------------------+ - * - * Due to ieee802154 layer isn't aware of driver and MAC structures, - * so lets allign them here. - */ - - priv_size = ALIGN(sizeof(*priv), NETDEV_ALIGN) + priv_data_len; - - phy = wpan_phy_alloc(priv_size); - if (!phy) { - pr_err("failure to allocate master IEEE802.15.4 device\n"); - return NULL; - } - - priv = wpan_phy_priv(phy); - priv->phy = phy; - priv->hw.phy = priv->phy; - priv->hw.priv = (char *)priv + ALIGN(sizeof(*priv), NETDEV_ALIGN); - priv->ops = ops; - - INIT_LIST_HEAD(&priv->slaves); - mutex_init(&priv->slaves_mtx); - - return &priv->hw; -} -EXPORT_SYMBOL(ieee802154_alloc_device); - -void ieee802154_free_device(struct ieee802154_dev *hw) -{ - struct mac802154_priv *priv = mac802154_to_priv(hw); - - BUG_ON(!list_empty(&priv->slaves)); - - mutex_destroy(&priv->slaves_mtx); - - wpan_phy_free(priv->phy); -} -EXPORT_SYMBOL(ieee802154_free_device); - -int ieee802154_register_device(struct ieee802154_dev *dev) -{ - struct mac802154_priv *priv = mac802154_to_priv(dev); - int rc = -ENOSYS; - - if (dev->flags & IEEE802154_HW_TXPOWER) { - if (!priv->ops->set_txpower) - goto out; - - priv->phy->set_txpower = mac802154_set_txpower; - } - - if (dev->flags & IEEE802154_HW_LBT) { - if (!priv->ops->set_lbt) - goto out; - - priv->phy->set_lbt = mac802154_set_lbt; - } - - if (dev->flags & IEEE802154_HW_CCA_MODE) { - if (!priv->ops->set_cca_mode) - goto out; - - priv->phy->set_cca_mode = mac802154_set_cca_mode; - } - - if (dev->flags & IEEE802154_HW_CCA_ED_LEVEL) { - if (!priv->ops->set_cca_ed_level) - goto out; - - priv->phy->set_cca_ed_level = mac802154_set_cca_ed_level; - } - - if (dev->flags & IEEE802154_HW_CSMA_PARAMS) { - if (!priv->ops->set_csma_params) - goto out; - - priv->phy->set_csma_params = mac802154_set_csma_params; - } - - if (dev->flags & IEEE802154_HW_FRAME_RETRIES) { - if (!priv->ops->set_frame_retries) - goto out; - - priv->phy->set_frame_retries = mac802154_set_frame_retries; - } - - priv->dev_workqueue = - create_singlethread_workqueue(wpan_phy_name(priv->phy)); - if (!priv->dev_workqueue) { - rc = -ENOMEM; - goto out; - } - - wpan_phy_set_dev(priv->phy, priv->hw.parent); - - priv->phy->add_iface = mac802154_add_iface; - priv->phy->del_iface = mac802154_del_iface; - - rc = wpan_phy_register(priv->phy); - if (rc < 0) - goto out_wq; - - rtnl_lock(); - - mutex_lock(&priv->slaves_mtx); - priv->running = MAC802154_DEVICE_RUN; - mutex_unlock(&priv->slaves_mtx); - - rtnl_unlock(); - - return 0; - -out_wq: - destroy_workqueue(priv->dev_workqueue); -out: - return rc; -} -EXPORT_SYMBOL(ieee802154_register_device); - -void ieee802154_unregister_device(struct ieee802154_dev *dev) -{ - struct mac802154_priv *priv = mac802154_to_priv(dev); - struct mac802154_sub_if_data *sdata, *next; - - flush_workqueue(priv->dev_workqueue); - destroy_workqueue(priv->dev_workqueue); - - rtnl_lock(); - - mutex_lock(&priv->slaves_mtx); - priv->running = MAC802154_DEVICE_STOPPED; - mutex_unlock(&priv->slaves_mtx); - - list_for_each_entry_safe(sdata, next, &priv->slaves, list) { - mutex_lock(&sdata->hw->slaves_mtx); - list_del(&sdata->list); - mutex_unlock(&sdata->hw->slaves_mtx); - - unregister_netdevice(sdata->dev); - } - - rtnl_unlock(); - - wpan_phy_unregister(priv->phy); -} -EXPORT_SYMBOL(ieee802154_unregister_device); - -MODULE_DESCRIPTION("IEEE 802.15.4 implementation"); -MODULE_LICENSE("GPL v2"); |