netdev - RE: [Intel-wired-lan] [PATCH v2 01/10] i40e: simplify Rx buffer recycle

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Message-ID: <26D9FDECA4FBDD4AADA65D8E2FC68A4A1D40C2FD@ORSMSX104.amr.corp.intel.com>
Date:   Fri, 19 Jul 2019 17:19:11 +0000
From:   "Bowers, AndrewX" <andrewx.bowers@...el.com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:     "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>
Subject: RE: [Intel-wired-lan] [PATCH v2 01/10] i40e: simplify Rx buffer
 recycle

> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces@...osl.org] On
> Behalf Of Kevin Laatz
> Sent: Monday, July 15, 2019 8:06 PM
> To: netdev@...r.kernel.org; ast@...nel.org; daniel@...earbox.net; Topel,
> Bjorn <bjorn.topel@...el.com>; Karlsson, Magnus
> <magnus.karlsson@...el.com>; jakub.kicinski@...ronome.com;
> jonathan.lemon@...il.com
> Cc: Richardson, Bruce <bruce.richardson@...el.com>; Loftus, Ciara
> <ciara.loftus@...el.com>; intel-wired-lan@...ts.osuosl.org;
> bpf@...r.kernel.org; Laatz, Kevin <kevin.laatz@...el.com>
> Subject: [Intel-wired-lan] [PATCH v2 01/10] i40e: simplify Rx buffer recycle
> 
> 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>
> ---
>  drivers/net/ethernet/intel/i40e/i40e_xsk.c | 13 +++----------
>  1 file changed, 3 insertions(+), 10 deletions(-)

Tested-by: Andrew Bowers <andrewx.bowers@...el.com>