Re: iSCSI: Use of the A bit

[Santosh Rao <santoshr@hpcuhe.cup.hp.com>]

> 
> Actually it does not actually say that.  It says "This is limited to
> sessions that support error recovery and is implemented through the A bit
> ..."
> 
> I know what I am about to say, is nit picking, but ....
> ErrorRecoveryLevel=0 is an error recovery technique.
> 
> Having said that, we probably should just change that statement to "This is
> implemented through the A bit ..."

John,

Initiators that use "ErrorRecoveryLevel=0" must not be required to respond to
an A bit setting with a DataACK. "ErrorRecoveryLevel=0" implies the initiator
need not support/use SNACK pdu.  

A target can recycle its data buffers once it has completed sending the data,
since it knows that the initiator will not issue Data SNACK while operating as
"ErrorRecoveryLevel=0".

- Santosh

-- 
##################################
Santosh Rao
Software Design Engineer,
HP-UX iSCSI Driver Team,
Hewlett Packard, Cupertino.
email : santoshr@cup.hp.com
Phone : 408-447-3751
##################################