From: Eran Ben-Avi <eranpublic@yahoo.com>
Subject: Openswan 2.4.9 - tasklet or workqueue ?
Date: Mon, 27 Aug 2007 00:26:34 -0700 (PDT)
Message-ID: <717768.84893.qm@web62515.mail.re1.yahoo.com>
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To: linux-crypto@vger.kernel.org
Sender: linux-crypto-owner@vger.kernel.org

Hi,

I tested IPSec(tunnel mode) routing performance between 2 GbE ports using packet generator(SMARTBIT)  on ARM 500MHz with latest OCF patched on Openswan2.4.9 and I noticed the callback functions are using workqueue.
Since RX was performed in NAPI mode with higher priority then TX (in workqueue), the callback function(in ipsec_ocf.c) was starved with zero routing.
The problem was solved after I switched to use tasklet instead of the workqueue.
Is there a room for updating next OCF release ?

Please advice.

Thanks,
Eran Ben-Avi


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