netdev - Re: [PATCH xfrm-next v7 6/8] xfrm: speed-up lookup of HW policies

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Message-ID: <Y3xQGEZ7izv/JAAX@gondor.apana.org.au>
Date:   Tue, 22 Nov 2022 12:29:12 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     Steffen Klassert <steffen.klassert@...unet.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org
Subject: Re: [PATCH xfrm-next v7 6/8] xfrm: speed-up lookup of HW policies

On Mon, Nov 21, 2022 at 03:21:45PM +0200, Leon Romanovsky wrote:
>
> The thing is that this SW acquire flow is a fraction case, as it applies
> to locally generated traffic.

A router can trigger an acquire on forwarded packets too.  Without
larvals this could quickly overwhelm the router.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt