netdev - Re: [PATCH RFC xfrm-next v3 0/8] Extend XFRM core to allow full offload configuration

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Message-ID: <20220925094039.GV2602992@gauss3.secunet.de>
Date:   Sun, 25 Sep 2022 11:40:39 +0200
From:   Steffen Klassert <steffen.klassert@...unet.com>
To:     Leon Romanovsky <leon@...nel.org>
CC:     Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        <netdev@...r.kernel.org>, Paolo Abeni <pabeni@...hat.com>,
        Raed Salem <raeds@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Bharat Bhushan <bbhushan2@...vell.com>
Subject: Re: [PATCH RFC xfrm-next v3 0/8] Extend XFRM core to allow full
 offload configuration

On Wed, Sep 21, 2022 at 08:37:06PM +0300, Leon Romanovsky wrote:
> On Wed, Sep 21, 2022 at 07:59:27AM -0700, Jakub Kicinski wrote:
> > On Thu, 8 Sep 2022 12:56:16 +0300 Leon Romanovsky wrote:
> > > I have TX traces too and can add if RX are not sufficient. 
> > 
> > The perf trace is good, but for those of us not intimately familiar
> > with xfrm, could you provide some analysis here?
> 
> The perf trace presented is for RX path of IPsec crypto offload mode. In that
> mode, decrypted packet enters the netdev stack to perform various XFRM specific
> checks.

Can you provide the perf traces and analysis for the TX side too? That
would be interesting in particular, because the policy and state lookups
there happen still in software.

Thanks a lot for your effort on this!