diff options
| -rw-r--r-- | net/mac802154/ieee802154_dev.c | 142 | ||||
| -rw-r--r-- | net/mac802154/mac802154.h | 3 |
2 files changed, 145 insertions, 0 deletions
diff --git a/net/mac802154/ieee802154_dev.c b/net/mac802154/ieee802154_dev.c index d130271eb52..9f36760b6c3 100644 --- a/net/mac802154/ieee802154_dev.c +++ b/net/mac802154/ieee802154_dev.c @@ -24,12 +24,140 @@ #include <linux/module.h> #include <linux/netdevice.h> +#include <net/netlink.h> +#include <linux/nl802154.h> #include <net/mac802154.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_priv *ipriv = priv->hw; + int res = 0; + + if (ipriv->open_count++ == 0) { + res = ipriv->ops->start(&ipriv->hw); + WARN_ON(res); + if (res) + goto err; + } + + if (ipriv->ops->ieee_addr) { + res = ipriv->ops->ieee_addr(&ipriv->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); + struct mac802154_priv *ipriv = priv->hw; + + netif_stop_queue(dev); + + 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; + + /* No devices is currently added */ + 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 an incremented device refcount */ + return dev; + +err_free: + free_netdev(dev); +err: + return ERR_PTR(err); +} + struct ieee802154_dev * ieee802154_alloc_device(size_t priv_data_len, struct ieee802154_ops *ops) { @@ -87,6 +215,8 @@ 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); @@ -105,6 +235,9 @@ 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; @@ -129,6 +262,7 @@ 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); @@ -139,6 +273,14 @@ void ieee802154_unregister_device(struct ieee802154_dev *dev) 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); diff --git a/net/mac802154/mac802154.h b/net/mac802154/mac802154.h index 7d9a0d4a99f..622752622c8 100644 --- a/net/mac802154/mac802154.h +++ b/net/mac802154/mac802154.h @@ -92,6 +92,9 @@ struct mac802154_sub_if_data { extern struct ieee802154_reduced_mlme_ops mac802154_mlme_reduced; +int mac802154_slave_open(struct net_device *dev); +int mac802154_slave_close(struct net_device *dev); + netdev_tx_t mac802154_tx(struct mac802154_priv *priv, struct sk_buff *skb, u8 page, u8 chan); |