linux-kernel - Re: [PATCH] crypto: ccm - avoid scatterlist for MAC encryption

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Message-ID: <1476892822.10092.15.camel@sipsolutions.net>
Date:   Wed, 19 Oct 2016 18:00:22 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     Ben Greear <greearb@...delatech.com>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc:     Herbert Xu <herbert@...dor.apana.org.au>,
        Andy Lutomirski <luto@...capital.net>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        "<netdev@...r.kernel.org>" <netdev@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        "<linux-wireless@...r.kernel.org>" <linux-wireless@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jouni Malinen <j@...fi>
Subject: Re: [PATCH] crypto: ccm - avoid scatterlist for MAC encryption

On Wed, 2016-10-19 at 08:59 -0700, Ben Greear wrote:
> 
> Do you actually expect performance regressions?  I'll be complaining
> if so, but will test first :)

I think we can expect this to use a bit more CPU time, but unless
you're very tight on that you probably shouldn't expect any throughput
difference.

johannes