wimaxing 2008-6-29 21:31
RFC5047-DA: Datamover Architecture
【资料成文时间】： 2007
【语言】：英文
【页数】：49
【何人（公司）所著】：
【文件格式】： PDF
【文件原名】：DA: Datamover Architecture for the Internet Small Computer System Interface (iSCSI)
【摘要或目录】：
Table of Contents
1. Motivation ......................................................4
1.1. Intent .....................................................4
1.2. Interpretation of Requirements .............................5
2. Definitions and Acronyms ........................................5
2.1. Definitions ................................................5
2.2. Acronyms ...................................................6
3. Architectural Layering of iSCSI and Datamover Layers ............7
4. Design Overview .................................................9
5. Architectural Concepts .........................................10
5.1. iSCSI PDU Types ...........................................10
5.1.1. iSCSI Data-Type PDUs ...............................10
5.1.2. iSCSI Control-Type PDUs ............................11
5.2. Data_Descriptor ...........................................11
5.3. Connection_Handle .........................................11
5.4. Operational Primitive .....................................12
5.5. Transport Connection ......................................13
6. Datamover Layer and Datamover Protocol .........................13
7. Functional Overview ............................................14
7.1. Startup ...................................................14
7.2. Full Feature Phase ........................................15
7.3. Wrap-up ...................................................15
8. Operational Primitives Provided by the Datamover Layer .........16
8.1. Send_Control ..............................................16
8.2. Put_Data ..................................................17
8.3. Get_Data ..................................................17
8.4. Allocate_Connection_Resources .............................18
8.5. Deallocate_Connection_Resources ...........................19
8.6. Enable_Datamover ..........................................19
8.7. Connection_Terminate ......................................20
8.8. Notice_Key_Values .........................................20
8.9. Deallocate_Task_Resources .................................20
9. Operational Primitives Provided by the iSCSI Layer .............21
9.1. Control_Notify ............................................21
9.2. Connection_Terminate_Notify ...............................22
9.3. Data_Completion_Notify ....................................22
9.4. Data_ACK_Notify ...........................................23
10. Datamover Interface (DI) ......................................23
10.1. Overview .................................................23
10.2. Interactions for Handling Asynchronous Notifications .....24
10.2.1. Connection Termination ............................24
10.2.2. Data Transfer Completion ..........................24
10.2.3. Data Acknowledgement ..............................25
10.3. Interactions for Sending an iSCSI PDU ....................25
10.3.1. SCSI Command ......................................26
10.3.2. SCSI Response .....................................26
10.3.3. Task Management Function Request ..................26
10.3.4. Task Management Function Response .................27
10.3.5. SCSI Data-Out and SCSI Data-In ....................27
10.3.6. Ready To Transfer (R2T) ...........................28
10.3.7. Asynchronous Message ..............................28
10.3.8. Text Request ......................................28
10.3.9. Text Response .....................................28
10.3.10. Login Request ....................................29
10.3.11. Login Response ...................................29
10.3.12. Logout Command ...................................29
10.3.13. Logout Response ..................................30
10.3.14. SNACK Request ....................................30
10.3.15. Reject ...........................................30
10.3.16. NOP-Out ..........................................30
10.3.17. NOP-In ...........................................30
10.4. Interactions for Receiving an iSCSI PDU ..................31
10.4.1. General Control-Type PDU Notification .............31
10.4.2. SCSI Data Transfer PDUs ...........................31
10.4.3. Login Request .....................................32
10.4.4. Login Response ....................................32
11. Security Considerations .......................................33
11.1. Architectural Considerations .............................33
11.2. Wire Protocol Considerations .............................33
12. References ....................................................34
12.1. Normative References .....................................34
12.2. Informative References ...................................34
Appendix A. Design Considerations and Examples ....................35
A.1. Design Considerations for a Datamover Protocol ............35
A.2. Examples of Datamover Interactions ........................35
Acknowledgements ..................................................44