netdev - Re: [PATCH v4] mac80211: move extra crypto data off the stack

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Date:   Mon, 17 Oct 2016 15:25:06 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc:     "<linux-wireless@...r.kernel.org>" <linux-wireless@...r.kernel.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        "<netdev@...r.kernel.org>" <netdev@...r.kernel.org>,
        Herbert Xu <herbert@...dor.apana.org.au>
Subject: Re: [PATCH v4] mac80211: move extra crypto data off the stack


> Indeed. And it keeps the clutter inside the aes_xxx.c files, which
> could easily be updated in the future to use some auxdata feature if
> it ever materializes.
> 
> I think it would help this code, but also the ESP code you pointed
> out, to have some kind of 'ordered synchronous' CRYPTO_xxx flag,
> where the crypto API could manage the kmem cache and percpu pointers
> to allocations.

Yeah, could be useful to have that more generally.

>  This goes well beyond what we can do as a fix, though, so we need an
> intermediate solution in any case.
> 
> Shall I propose the patch?

I assume you mean a mac80211 patch - sure, I'll take that instead of
the two I have now.

johannes