netdev - Re: [PATCH bpf-next v6 01/12] i40e: simplify Rx buffer recycle

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Message-ID: <F8E0DEC3-B5A4-4546-A0E4-686877113546@gmail.com>
Date:   Fri, 30 Aug 2019 08:37:31 -0700
From:   "Jonathan Lemon" <jonathan.lemon@...il.com>
To:     "Kevin Laatz" <kevin.laatz@...el.com>
Cc:     netdev@...r.kernel.org, ast@...nel.org, daniel@...earbox.net,
        bjorn.topel@...el.com, magnus.karlsson@...el.com,
        jakub.kicinski@...ronome.com, saeedm@...lanox.com,
        maximmi@...lanox.com, stephen@...workplumber.org,
        bruce.richardson@...el.com, ciara.loftus@...el.com,
        bpf@...r.kernel.org, intel-wired-lan@...ts.osuosl.org
Subject: Re: [PATCH bpf-next v6 01/12] i40e: simplify Rx buffer recycle



On 26 Aug 2019, at 19:25, Kevin Laatz wrote:

> Currently, the dma, addr and handle are modified when we reuse Rx buffers
> in zero-copy mode. However, this is not required as the inputs to the
> function are copies, not the original values themselves. As we use the
> copies within the function, we can use the original 'old_bi' values
> directly without having to mask and add the headroom.
>
> Signed-off-by: Kevin Laatz <kevin.laatz@...el.com>
Acked-by: Jonathan Lemon <jonathan.lemon@...il.com>