netdev - Re: [PATCH net-next] liquidio: replace info-pointer mode with buffer-pointer-only mode

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Message-Id: <20170618.235559.1148715988392937305.davem@davemloft.net>
Date:   Sun, 18 Jun 2017 23:55:59 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     felix.manlunas@...ium.com
Cc:     netdev@...r.kernel.org, raghu.vatsavayi@...ium.com,
        derek.chickles@...ium.com, satananda.burla@...ium.com,
        prasad.kanneganti@...ium.com
Subject: Re: [PATCH net-next] liquidio: replace info-pointer mode with
 buffer-pointer-only mode

From: Felix Manlunas <felix.manlunas@...ium.com>
Date: Sun, 18 Jun 2017 05:04:11 -0700

> From: Prasad Kanneganti <prasad.kanneganti@...ium.com>
> 
> Each Octeon output ring can DMA packets to host memory in two modes:  info-
> pointer mode and buffer-pointer-only mode.  In info-pointer mode, Octeon
> takes two buffer pointers for each packet and places the length of the
> packet along with specified number of bytes from the beginning of the
> packet into one buffer and the rest of the packet in a separate buffer.  In
> buffer-pointer-only mode, Octeon takes single buffer pointer and places the
> length of the packet at the beginning of the buffer followed by the packet
> data.
> 
> This patch switches all Octeon output rings from info-pointer mode to
> buffer-pointer-only mode.  This results in fewer DMA setups and cache line
> snoops.
> 
> Signed-off-by: Prasad Kanneganti <pkanneganti@...ium.com>
> Signed-off-by: Derek Chickles <derek.chickles@...ium.com>
> Signed-off-by: Satanand Burla <satananda.burla@...ium.com>
> Signed-off-by: Felix Manlunas <felix.manlunas@...ium.com>

Applied.