netdev - Re: [PATCH v4 net-next 2/2] udp_tunnel: use static call for GRO hooks when possible

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Message-ID: <67d1caecdaf4d_38d99f294ce@willemb.c.googlers.com.notmuch>
Date: Wed, 12 Mar 2025 13:57:00 -0400
From: Willem de Bruijn <willemdebruijn.kernel@...il.com>
To: Paolo Abeni <pabeni@...hat.com>, 
 netdev@...r.kernel.org
Cc: Willem de Bruijn <willemdebruijn.kernel@...il.com>, 
 "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, 
 Simon Horman <horms@...nel.org>, 
 David Ahern <dsahern@...nel.org>, 
 kuniyu@...zon.com
Subject: Re: [PATCH v4 net-next 2/2] udp_tunnel: use static call for GRO hooks
 when possible

Paolo Abeni wrote:
> It's quite common to have a single UDP tunnel type active in the
> whole system. In such a case we can replace the indirect call for
> the UDP tunnel GRO callback with a static call.
> 
> Add the related accounting in the control path and switch to static
> call when possible. To keep the code simple use a static array for
> the registered tunnel types, and size such array based on the kernel
> config.
> 
> Signed-off-by: Paolo Abeni <pabeni@...hat.com>

Reviewed-by: Willem de Bruijn <willemb@...gle.com>