netdev - Re: [PATCH net-next] macsec: introduce default_async

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Message-ID: <ZPFN3oNu1hGPpt/a@gondor.apana.org.au>
Date: Fri, 1 Sep 2023 10:35:10 +0800
From: Herbert Xu <herbert@...dor.apana.org.au>
To: Sabrina Dubroca <sd@...asysnail.net>
Cc: Scott Dial <scott@...ttdial.com>, Jakub Kicinski <kuba@...nel.org>,
	netdev@...r.kernel.org, Jonathan Corbet <corbet@....net>,
	linux-doc@...r.kernel.org
Subject: Re: [PATCH net-next] macsec: introduce default_async_crypto sysctl

On Thu, Aug 31, 2023 at 04:10:40PM +0200, Sabrina Dubroca wrote:
>
> Herbert, can we expect ASYNC implementations of gcm(aes) to maintain
> ordering of completions wrt requests? For AESNI, the use of
> cryptd_aead_queued() makes sure of that, but I don't know if other
> implementations under drivers/crypto would have the same
> guarantee.

Absolutely as otherwise IPsec would be seriously broken (it's even
worse than plain TCP because of the replay windows).

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