[PATCH 2.6 5/14] e1000: Avoid filling tx_ring completely - shemminger@osdl.org
From: Ganesh Venkatesan <hidden>
Date: 2005-01-07 01:21:18
Signed-off-by: Ganesh Venkatesan <redacted> diff -up net-drivers-2.6/drivers/net/e1000/e1000_main.c net-drivers-2.6/drivers/net/e1000.new/e1000_main.c
--- net-drivers-2.6/drivers/net/e1000/e1000_main.c 2004-12-03 07:24:37.090623184 -0800
+++ net-drivers-2.6/drivers/net/e1000.new/e1000_main.c 2004-12-03 07:24:38.581396552 -0800@@ -1842,6 +1842,10 @@ e1000_xmit_frame(struct sk_buff *skb, st netdev->trans_start = jiffies; + /* Make sure there is space in the ring for the next send. */ + if(unlikely(E1000_DESC_UNUSED(&adapter->tx_ring) < MAX_SKB_FRAGS + 2)) + netif_stop_queue(netdev); + spin_unlock_irqrestore(&adapter->tx_lock, flags); return NETDEV_TX_OK; }