Subject: Re: SMP re-entrancy in kernel drivers/"bottom half?"
To: Jonathan Stone <jonathan@dsg.stanford.edu>
From: Jason Thorpe <thorpej@shagadelic.org>
List: tech-kern
Date: 02/22/2005 15:31:49
On Feb 22, 2005, at 1:28 PM, Jonathan Stone wrote:
> ISTR Jason once said the wm(4) hardware was designed to work rather
> like that, though I dunno if our wm(4) driver goes as far as that.
> And if (dim) memory serves, certain Big Iron Unices handled their Big
> Iron NICs that way, too.
The wm chip can be programmed to defer the Tx interrupt as long as you
are still giving it more packets (within a tunable timeout threshold).
-- thorpej