Hello.
On 04/02/2013 10:47 PM, Alan Ott wrote:
Use netif_stop_queue() and netif_wake_queue() to control the flow of
packets to mac802154 devices. Since many IEEE 802.15.4 devices have no
output buffer, and since the mac802154 xmit() function is designed to
block, netif_stop_queue() is called after each packet.
Signed-off-by: Alan Ott <a...@signal11.us>
---
net/mac802154/tx.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/net/mac802154/tx.c b/net/mac802154/tx.c
index a248246..fe3e02c 100644
--- a/net/mac802154/tx.c
+++ b/net/mac802154/tx.c
[...]
@@ -71,6 +73,12 @@ static void mac802154_xmit_worker(struct work_struct *work)
out:
mutex_unlock(&xw->priv->phy->pib_lock);
+ /* 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);
+ }
Are {} really necessary here?
@@ -108,6 +117,13 @@ netdev_tx_t mac802154_tx(struct mac802154_priv *priv,
struct sk_buff *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);
+ }
And here?
WBR, Sergei
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