netdev - Re: [PATCH net-next v2] wireguard: Wire-up big tcp support

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Message-ID: <ZwQPgbwio38LWqKS@zx2c4.com>
Date: Mon, 7 Oct 2024 18:42:41 +0200
From: "Jason A. Donenfeld" <Jason@...c4.com>
To: Daniel Borkmann <daniel@...earbox.net>
Cc: kuba@...nel.org, edumazet@...gle.com, aspsk@...valent.com, m@...bda.lt,
	netdev@...r.kernel.org, wireguard@...ts.zx2c4.com
Subject: Re: [PATCH net-next v2] wireguard: Wire-up big tcp support

Hi Daniel,

On Fri, Oct 04, 2024 at 06:55:18PM +0200, Daniel Borkmann wrote:
> Advertise GSO_MAX_SIZE as TSO max size in order support BIG TCP for wireguard.
> This helps to improve wireguard performance a bit when enabled as it allows
> wireguard to aggregate larger skbs in wg_packet_consume_data_done() via
> napi_gro_receive(), but also allows the stack to build larger skbs on xmit
> where the driver then segments them before encryption inside wg_xmit().

Thanks, I'll queue this up. Do you have any perf numbers on the speedup,
btw?

Jason