netdev - RE: [PATCH bpf-next v2 4/5] xsk: introduce batched Tx descriptor interfaces

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Date:   Wed, 11 Nov 2020 00:40:06 -0800
From:   John Fastabend <john.fastabend@...il.com>
To:     Magnus Karlsson <magnus.karlsson@...il.com>,
        magnus.karlsson@...el.com, bjorn.topel@...el.com, ast@...nel.org,
        daniel@...earbox.net, netdev@...r.kernel.org,
        jonathan.lemon@...il.com, kuba@...nel.org, john.fastabend@...il.com
Cc:     bpf@...r.kernel.org, jeffrey.t.kirsher@...el.com,
        anthony.l.nguyen@...el.com, maciej.fijalkowski@...el.com,
        maciejromanfijalkowski@...il.com, intel-wired-lan@...ts.osuosl.org
Subject: RE: [PATCH bpf-next v2 4/5] xsk: introduce batched Tx descriptor
 interfaces

Magnus Karlsson wrote:
> From: Magnus Karlsson <magnus.karlsson@...el.com>
> 
> Introduce batched descriptor interfaces in the xsk core code for the
> Tx path to be used in the driver to write a code path with higher
> performance. This interface will be used by the i40e driver in the
> next patch. Though other drivers would likely benefit from this new
> interface too.
> 
> Note that batching is only implemented for the common case when
> there is only one socket bound to the same device and queue id. When
> this is not the case, we fall back to the old non-batched version of
> the function.
> 
> Signed-off-by: Magnus Karlsson <magnus.karlsson@...el.com>
> ---

Acked-by: John Fastabend <john.fastabend@...il.com>