On Thu, 2007-07-06 at 17:31 -0700, Sridhar Samudrala wrote:

If the QDISC_RUNNING flag guarantees that only one CPU can call
dev->hard_start_xmit(), then why do we need to hold netif_tx_lock
for non-LLTX drivers?

I havent stared at other drivers, but for e1000 seems to me 
even if you got rid of LLTX that netif_tx_lock is unnecessary.
Herbert?

cheers,
jamal