[PATCH] net/nfp: support 48-bit DMA address for firmware with NFDk
Niklas Söderlund
niklas.soderlund at corigine.com
Wed Feb 15 18:47:11 CET 2023
Hi Ferruh,
Thanks for your continues effort in dealing with NFP patches.
On 2023-02-15 13:42:01 +0000, Ferruh Yigit wrote:
> On 2/8/2023 9:15 AM, Chaoyong He wrote:
> > From: Peng Zhang <peng.zhang at corigine.com>
> >
> > 48-bit DMA address is supported in the firmware with NFDk, so enable
> > this feature in PMD now. But the firmware with NFD3 still just
> > support 40-bit DMA address.
> >
> > RX free list descriptor, used by both NFD3 and NFDk, is also modified
> > to support 48-bit DMA address. That's OK because the top bits is always
> > set to 0 when assigned with 40-bit DMA address.
> >
> > Fixes: c73dced48c8c ("net/nfp: add NFDk Tx")
> > Cc: jin.liu at corigine.com
> > Cc: stable at dpdk.org
> >
>
> Why a backport is requested? As far as I understand this is not fixing
> anything but extending device capability. Is this a fix?
I agree this is a bit of a grey zone. We reasoned this was a fix as we
should have done this from the start in the commit that added support
for NFDk. Are you OK moving forward with this as a fix or would you
prefer we resubmit without the request to backport?
>
> > Signed-off-by: Peng Zhang <peng.zhang at corigine.com>
> > Reviewed-by: Chaoyong He <chaoyong.he at corigine.com>
> > Reviewed-by: Niklas Söderlund <niklas.soderlund at corigine.com>
>
--
Kind Regards,
Niklas Söderlund
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