|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] iSCSI: immediate vs. unsolicitedI see a semantic problem with the use of immediate being a subset of unsolicited. Being a subset, one can't use the word "unsolicited" by itself to mean "without the use of R2T" and some confusion is inevitable. I would like to propose a wording standardization of immediate data vs. unsolicited data. If we could use "immediate data" to mean data accompanying a command PDU and "unsolicited data" meaning data-out PDU’s that are not solicited with an R2T, that would be a great help. If this seems like a good idea, I will be happy to go through and find all references to "immediate" and "unsolicited" and make suggested wording changes. Here is an example: Section: 1.2.5 iSCSI Full Feature Phase Current: Outgoing SCSI data (initiator to target user data or command parameters) is sent as either solicited data or unsolicited data. Solicited data is sent in response to Ready To Transfer (R2T) PDUs. Unsolicited data can be sent as part of an iSCSI command PDU ("immediate data") or in separate iSCSI data PDUs. An initiator may send unsolicited data either as immediate (up to the negotiated maximum PDU size) or in a separate PDU sequence (up to the negotiated limit)). Targets operate in either solicited (R2T) data mode or unsolicited (non R2T) data mode. In unsolicited mode, an initial R2T is implied. A target MAY separately enable immediate data without enabling the more general (separate data PDUs) form of unsolicited data. Proposed: Outgoing SCSI data (initiator to target user data or command parameters) is sent as either immediate data, solicited data or unsolicited data. Immediate data is sent (up to the negotiated maximum PDU size) as part of an iSCSI command PDU ("immediate data"). Unsolicited data is sent in separate iSCSI data PDUs (up to the negotiated limit). Solicited data is sent in response to Ready To Transfer (R2T) PDUs. In unsolicited mode, an initial R2T is implied. A target MAY separately enable immediate data without enabling the unsolicited data. mailto:Eddy@Quicksall.com mailto:Eddy@Quicksall.com
Home Last updated: Tue Sep 04 01:04:32 2001 6315 messages in chronological order |