From: Eric Dumazet <eric.dumazet@gmail.com>
To: James Kosin <JKosin@intcomgrp.com>
Cc: linux-kernel@vger.kernel.org, Linux Netdev List <netdev@vger.kernel.org>
Subject: Re: arm: Optimization for ethernet MAC handling at91_ether.c
Date: Tue, 12 Jan 2010 17:35:49 +0100 [thread overview]
Message-ID: <4B4CA4E5.7030800@gmail.com> (raw)
In-Reply-To: <3DBBD805E3BA064A87F551C0E8BD3674028973F5@MAILSRV.intcomgrp.com>
CC to netdev
Le 12/01/2010 16:39, James Kosin a écrit :
> Everyone,
>
> Since, a AT91_EMAC_TUND only happens when the transmitter is unable to
> transfer the frame in time for a frame to be sent. It makes sense to
> RETRY the packet in this condition in the ISR.
> Or would this overcomplicate a simple task?
> ... see below ...
>
...
>
> ...
> I do know there needs to be a bit more code then to handle the
> successful case below this; but, this is enough to understand what I am
> talking about. The UNDERRUN error should happen infrequently and in
> ideal circumstances not happen at all.
>
If this happens once in a while, why do you want driver to retry the transmit ?
next prev parent reply other threads:[~2010-01-12 16:36 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-12 15:39 arm: Optimization for ethernet MAC handling at91_ether.c James Kosin
2010-01-12 16:35 ` Eric Dumazet [this message]
2010-01-12 17:51 ` James Kosin
2010-01-12 18:08 ` Eric Dumazet
2010-01-12 18:42 ` James Kosin
2010-01-12 19:03 ` James Kosin
2010-01-12 19:24 ` Eric Dumazet
2010-01-12 19:39 ` James Kosin
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