netdev - Re: [PATCH v2 net-next] ixgbe: flush when in xmit_more mode and under descriptor pressure

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Message-Id: <20140827.231814.2270210172570593864.davem@davemloft.net>
Date:	Wed, 27 Aug 2014 23:18:14 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	dborkman@...hat.com
Cc:	alexander.h.duyck@...el.com, netdev@...r.kernel.org
Subject: Re: [PATCH v2 net-next] ixgbe: flush when in xmit_more mode and
 under descriptor pressure

From: Daniel Borkmann <dborkman@...hat.com>
Date: Tue, 26 Aug 2014 19:34:18 +0200

> When xmit_more mode is being used and the ring is about to
> become full or the stack has stopped the ring, enforce a tail
> pointer write to the hw. Otherwise, we could risk a TX hang.
> 
> Code suggested by Alexander Duyck.
> 
> Signed-off-by: Alexander Duyck <alexander.h.duyck@...el.com>
> Signed-off-by: Daniel Borkmann <dborkman@...hat.com>
> ---
>  v1->v2:
>   - Worked in Alex' feedback; in accordance w/ Alex, sending out v2
>   - Rerun tests, looks good

Applied, thanks Daniel.

I'll make similar mods to igb and vhost_net soon.
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