netdev - Re: [PATCH net 1/1] sfc: Report TX completions to BQL after all TX events in interrupt

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Date:	Thu, 09 Jul 2015 00:00:58 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	sshah@...arflare.com
Cc:	netdev@...r.kernel.org, linux-net-drivers@...arflare.com
Subject: Re: [PATCH net 1/1] sfc: Report TX completions to BQL after all TX
 events in interrupt

From: Shradha Shah <sshah@...arflare.com>
Date: Wed, 8 Jul 2015 10:05:10 +0100

> From: Peter Dunning <pdunning@...arflare.com>
> 
> The limit for BQL is updated each time we call
> netdev_tx_completed_queue.
> Without this patch the BQL limit was updated for every TX event we
> see.
> The issue was that this only updated the limit to handle the data
> we complete in two events as the first event wouldn't show that
> enough traffic had been processed between them.
> 
> This was OK when interrupt moderation was off but not when it was
> on as more data had to be completed in a single interrupt.
> 
> The patch changes this so that we do report the completion to BQL
> only when all the TX events in the interrupt have been processed.
> 
> Signed-off-by: Shradha Shah <sshah@...arflare.com>

Applied, thanks.
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