netdev - Re: [net-next PATCH v2 0/3] Add devlink params to vary cqe and rbuf

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Message-ID: <CALHRZuoryTs0ApwY=ubX7GHja826QnACMUePyfw2KHmhYaQq1Q@mail.gmail.com>
Date:   Wed, 6 Oct 2021 19:18:20 +0530
From:   sundeep subbaraya <sundeep.lkml@...il.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     Subbaraya Sundeep <sbhatta@...vell.com>,
        David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
        Sunil Kovvuri Goutham <sgoutham@...vell.com>,
        hariprasad <hkelam@...vell.com>,
        Geetha sowjanya <gakula@...vell.com>
Subject: Re: [net-next PATCH v2 0/3] Add devlink params to vary cqe and rbuf

Hi Jakub,

On Wed, Oct 6, 2021 at 7:14 PM Jakub Kicinski <kuba@...nel.org> wrote:
>
> On Wed, 6 Oct 2021 12:48:43 +0530 Subbaraya Sundeep wrote:
> > Octeontx2 hardware writes a Completion Queue Entry(CQE) in the
> > memory provided by software when a packet is received or
> > transmitted. CQE has the buffer pointers (IOVAs) where the
> > packet data fragments are written by hardware. One 128 byte
> > CQE can hold 6 buffer pointers and a 512 byte CQE can hold
> > 42 buffer pointers. Hence large packets can be received either
> > by using 512 byte CQEs or by increasing size of receive buffers.
> > Current driver only supports 128 byte CQEs.
> > This patchset adds devlink params to change CQE and receive
> > buffer sizes which inturn helps to tune whether many small size
> > buffers or less big size buffers are needed to receive larger
> > packets. Below is the patches description:
>
> nak. Stop ignoring feedback and reposting your patches.
Sure and noted.

Thanks,
Sundeep