netdev - Re: [PATCH net 1/5] net: tls: handle -EBUSY on async encrypt/decrypt requests

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Date: Sat, 9 Sep 2023 08:53:21 +0800
From: Herbert Xu <herbert@...dor.apana.org.au>
To: Jakub Kicinski <kuba@...nel.org>
Cc: Sabrina Dubroca <sd@...asysnail.net>, netdev@...r.kernel.org,
	vakul.garg@....com, borisp@...dia.com, john.fastabend@...il.com
Subject: Re: [PATCH net 1/5] net: tls: handle -EBUSY on async encrypt/decrypt
 requests

On Fri, Sep 08, 2023 at 02:26:02PM -0700, Jakub Kicinski wrote:
>
> and call it after we get EBUSY? We'll drain the pending queue all the
> way to empty, which may not be too great for throughput, but who cares
> - right now we don't handle EBUSY at all, so it must be extremely rare.

EBUSY means that you're sending requests to the Crypto API faster
than it can process them.  If left unhandled you will eventually
exhaust all memory.

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