* 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 <dbaryshkov@gmail.com>
* Sergey Lapin <slapin@ossfans.org>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/crc-ccitt.h>
+#include <asm/unaligned.h>
+#include <net/rtnetlink.h>
#include <net/ieee802154_netdev.h>
#include <net/mac802154.h>
-#include <net/wpan-phy.h>
+#include <net/cfg802154.h>
-#include "mac802154.h"
+#include "ieee802154_i.h"
+#include "driver-ops.h"
/* IEEE 802.15.4 transceivers can sleep during the xmit session, so process
* packets through the workqueue.
*/
-struct xmit_work {
+struct ieee802154_xmit_cb {
struct sk_buff *skb;
struct work_struct work;
- struct mac802154_priv *priv;
- u8 chan;
- u8 page;
+ struct ieee802154_local *local;
};
-static void mac802154_xmit_worker(struct work_struct *work)
+static struct ieee802154_xmit_cb ieee802154_xmit_cb;
+
+static void ieee802154_xmit_worker(struct work_struct *work)
{
- struct xmit_work *xw = container_of(work, struct xmit_work, work);
- struct mac802154_sub_if_data *sdata;
+ struct ieee802154_xmit_cb *cb =
+ container_of(work, struct ieee802154_xmit_cb, work);
+ struct ieee802154_local *local = cb->local;
+ struct sk_buff *skb = cb->skb;
+ struct net_device *dev = skb->dev;
int res;
- mutex_lock(&xw->priv->phy->pib_lock);
- if (xw->priv->phy->current_channel != xw->chan ||
- xw->priv->phy->current_page != xw->page) {
- res = xw->priv->ops->set_channel(&xw->priv->hw,
- xw->page,
- xw->chan);
- if (res) {
- pr_debug("set_channel failed\n");
- goto out;
- }
+ rtnl_lock();
- xw->priv->phy->current_channel = xw->chan;
- xw->priv->phy->current_page = xw->page;
- }
+ /* check if ifdown occurred while schedule */
+ if (!netif_running(dev))
+ goto err_tx;
- res = xw->priv->ops->xmit(&xw->priv->hw, xw->skb);
+ res = drv_xmit_sync(local, skb);
if (res)
- pr_debug("transmission failed\n");
+ goto err_tx;
-out:
- mutex_unlock(&xw->priv->phy->pib_lock);
+ ieee802154_xmit_complete(&local->hw, skb);
- /* Restart the netif queue on each sub_if_data object. */
- rcu_read_lock();
- list_for_each_entry_rcu(sdata, &xw->priv->slaves, list)
- netif_wake_queue(sdata->dev);
- rcu_read_unlock();
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb->len;
- dev_kfree_skb(xw->skb);
+ rtnl_unlock();
- kfree(xw);
+ return;
+
+err_tx:
+ /* Restart the netif queue on each sub_if_data object. */
+ ieee802154_wake_queue(&local->hw);
+ rtnl_unlock();
+ kfree_skb(skb);
+ netdev_dbg(dev, "transmission failed\n");
}
-netdev_tx_t mac802154_tx(struct mac802154_priv *priv, struct sk_buff *skb,
- u8 page, u8 chan)
+static netdev_tx_t
+ieee802154_tx(struct ieee802154_local *local, struct sk_buff *skb)
{
- struct xmit_work *work;
- struct mac802154_sub_if_data *sdata;
-
- if (!(priv->phy->channels_supported[page] & (1 << chan))) {
- WARN_ON(1);
- goto err_tx;
- }
-
- mac802154_monitors_rx(mac802154_to_priv(&priv->hw), skb);
+ struct net_device *dev = skb->dev;
+ int ret;
- if (!(priv->hw.flags & IEEE802154_HW_OMIT_CKSUM)) {
+ if (!(local->hw.flags & IEEE802154_HW_TX_OMIT_CKSUM)) {
u16 crc = crc_ccitt(0, skb->data, skb->len);
- u8 *data = skb_put(skb, 2);
- data[0] = crc & 0xff;
- data[1] = crc >> 8;
+ put_unaligned_le16(crc, skb_put(skb, 2));
}
- if (skb_cow_head(skb, priv->hw.extra_tx_headroom))
+ if (skb_cow_head(skb, local->hw.extra_tx_headroom))
goto err_tx;
- work = kzalloc(sizeof(*work), GFP_ATOMIC);
- if (!work) {
- kfree_skb(skb);
- return NETDEV_TX_BUSY;
- }
-
/* Stop the netif queue on each sub_if_data object. */
- rcu_read_lock();
- list_for_each_entry_rcu(sdata, &priv->slaves, list)
- netif_stop_queue(sdata->dev);
- rcu_read_unlock();
+ ieee802154_stop_queue(&local->hw);
+
+ /* async is priority, otherwise sync is fallback */
+ if (local->ops->xmit_async) {
+ ret = drv_xmit_async(local, skb);
+ if (ret) {
+ ieee802154_wake_queue(&local->hw);
+ goto err_tx;
+ }
- INIT_WORK(&work->work, mac802154_xmit_worker);
- work->skb = skb;
- work->priv = priv;
- work->page = page;
- work->chan = chan;
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb->len;
+ } else {
+ INIT_WORK(&ieee802154_xmit_cb.work, ieee802154_xmit_worker);
+ ieee802154_xmit_cb.skb = skb;
+ ieee802154_xmit_cb.local = local;
- queue_work(priv->dev_workqueue, &work->work);
+ queue_work(local->workqueue, &ieee802154_xmit_cb.work);
+ }
return NETDEV_TX_OK;
kfree_skb(skb);
return NETDEV_TX_OK;
}
+
+netdev_tx_t
+ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+
+ skb->skb_iif = dev->ifindex;
+
+ return ieee802154_tx(sdata->local, skb);
+}
+
+netdev_tx_t
+ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int rc;
+
+ rc = mac802154_llsec_encrypt(&sdata->sec, skb);
+ if (rc) {
+ netdev_warn(dev, "encryption failed: %i\n", rc);
+ kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
+ skb->skb_iif = dev->ifindex;
+
+ return ieee802154_tx(sdata->local, skb);
+}
projects / cascardo / linux.git / blobdiff