Re: iSCSI: DataACK SNACK

["Julian Satran" <Julian_Satran@il.ibm.com>]

DataACK is a "bulk ack". Answering the last (in case of several) is good enough.
I fail to see your point.

Julo

"Chuck Micalizzi" <chuck.micalizzi@qlogic.com> Sent by: owner-ips@ece.cmu.edu 14-02-02 21:02

To:        <ips@ece.cmu.edu>         cc:                 Subject:        iSCSI: DataACK SNACK

All,
    
    I have a question regarding DataACK.

    Rev. 10 section 10.16.1 states:

    For a Data/R2T SNACK, the Initiator Task Tag MUST be set
    to the Initiator Task Tag of the referenced Command.
    Otherwise, it is reserved.

    it also states:

    The DataACK is used to free resources at the target and 
    not to request or imply data retransmission.

    Is the target allowed to have more than one DataACK
    outstanding on a connection?    

    If multiple outstanding DataACKs are allowed per connection
    then in my opinion the DataACK must have a valid task tag
    inorder for the target to associate the DataACK with the
    appropriate resources to be freed.
   

chuck micalizzi
Qlogic Corp.