iSCSI: DLB [T.31]

[Steve Reames <reames@diskdrive.com>]

 From DLB's comments:

 >[T.31] 9.16.1  Type
 >
 >   An iSCSI target that does not support recovery within connection MAY
 >   reject the status SNACK with a Reject PDU. If the target supports
 >   recovery within connection, it MAY reject the SNACK after which it
 >   MUST issue an Asynchronous Message PDU with an iSCSI event that indi-
 >   cates "Request Logout".
 >
 > This should be conditioned on the operational ErrorRecoveryLevel of the
 > session, not whether the target supports recovery within connection.

I would prefer that this not be conditioned on the ErrorRecoveryLevel. If I 
am writing code, I may choose to support recovery-within-connection, but 
not all the features that would be required to move me up to 
ErrorRecoveryLevel 1. I would like SNACK and Reject PDUs to work properly 
for my code, even though it is technically only "ErrorRecoveryLevel 0.5".
	As I read it, changing the wording would allow the target to ignore my 
improved error recovery efforts unless I have a full ErrorRecoveryLevel 1 
implementation. David, I doubt that is what you intended, so maybe you want 
to word it a little differently.