[storm] iSER update request from Alex Nezhinsky on AHS size
Mike Ko <Michael@huaweisymantec.com> Thu, 20 August 2009 23:26 UTC
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From: Mike Ko <Michael@huaweisymantec.com>
To: STORM <storm@ietf.org>
Date: Thu, 20 Aug 2009 16:26:23 -0700
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Subject: [storm] iSER update request from Alex Nezhinsky on AHS size
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Alex sent me the following iSER update request: > In the Infiniband implementation ISER has to post recv-buffers for > the maximal possible message length. If a PDU contains AHS, then no > upper size limit can be set beforehand, because AHS size is not fixed > (it is determined by the contents of BHS, TotalAHSLength field). Then > our posted buffer may prove insufficient. > > Suggested solution: to add a hard limit on AHS length as an > operational parameter, per session. This is in a sense similar to > MaxOutstandingUnexpectedPDUs key which has no > meaning in a stream-based protocol. It sounds reasonable to me. If there is no objection, we can add the MaxAHSLength key to the iSER update as Alex suggested. Mike