From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Smirnov Subject: [PATCH 10/12] [MAC802154] mac802154: bind network iface to phy Date: Wed, 30 Nov 2011 17:27:09 +0300 Message-ID: <1322663229-4095-1-git-send-email-alex.bluesman.smirnov@gmail.com> References: <20111130141827.GA3739@avtobot.cybertron> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org, linux-zigbee-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: dbaryshkov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org Return-path: In-Reply-To: <20111130141827.GA3739-AUGNqIMGY+bGcXpsla5Oef8+0UxHXcjY@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-zigbee-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: netdev.vger.kernel.org Transciever slaves manipulation. Each slave represents network interface in user space and is described by net_device structure. One transciever may support several slaves and be connected to several networks at the same time. Signed-off-by: Alexander Smirnov --- net/mac802154/ieee802154_dev.c | 147 ++++++++++++++++++++++++++++++++++++++++ 1 files changed, 147 insertions(+), 0 deletions(-) diff --git a/net/mac802154/ieee802154_dev.c b/net/mac802154/ieee802154_dev.c index e90d336..8fe1a9b 100644 --- a/net/mac802154/ieee802154_dev.c +++ b/net/mac802154/ieee802154_dev.c @@ -18,12 +18,143 @@ #include #include +#include #include #include #include #include "mac802154.h" +#include "mib.h" + +int mac802154_slave_open(struct net_device *dev) +{ + struct mac802154_sub_if_data *priv = netdev_priv(dev); + int res = 0; + + if (priv->hw->open_count++ == 0) { + res = priv->hw->ops->start(&priv->hw->hw); + WARN_ON(res); + if (res) + goto err; + } + + if (priv->hw->ops->ieee_addr) { + res = priv->hw->ops->ieee_addr(&priv->hw->hw, dev->dev_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); + + dev->priv_flags &= ~IFF_IEEE802154_COORD; + + netif_stop_queue(dev); + + if ((--priv->hw->open_count) == 0) + priv->hw->ops->stop(&priv->hw->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; + + /* No devices is currently supported */ + switch (type) { + 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 a device w/ incremented refcount */ + return dev; + +err_free: + free_netdev(dev); +err: + return ERR_PTR(err); +} + struct ieee802154_dev *ieee802154_alloc_device(size_t priv_size, struct ieee802154_ops *ops) @@ -61,6 +192,8 @@ void ieee802154_free_device(struct ieee802154_dev *hw) { struct mac802154_priv *priv = mac802154_to_priv(hw); + BUG_ON(!list_empty(&priv->slaves)); + wpan_phy_free(priv->phy); mutex_destroy(&priv->slaves_mtx); @@ -80,6 +213,9 @@ int ieee802154_register_device(struct ieee802154_dev *dev) 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; @@ -99,9 +235,12 @@ out: } 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); @@ -112,6 +251,14 @@ void ieee802154_unregister_device(struct ieee802154_dev *dev) priv->running = 0; 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); -- 1.7.2.3 ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. 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