ANSI INCITS 350-2003 Information Technology - Fibre Channel Protocol for SCSI Second Version (FCP-2).pdf

1、ANSI INCITS 350-2003for Information Technology Fibre Channel Protocol for SCSI, Second Version (FCP-2)ANSIINCITS 350-2003ANSIINCITS 350-2003American National Standardfor Information Technology Fibre Channel Protocol for SCSI,Second Version (FCP-2)SecretariatInformation Technology Industry CouncilApp

2、roved April 7, 2003American National Standards Institute, Inc.AbstractThis standard describes the frame format and protocol definitions required to transfer commands and databetween a SCSI (Small Computer System Interface) initiator and target using the Fibre Channel family ofstandards. The second v

3、ersion adds optional retransmission, task ordering, and confirmation capabilities.Approval of an American National Standard requires review by ANSI that therequirements for due process, consensus, and other criteria for approval havebeen met by the standards developer.Consensus is established when,

4、in the judgement of the ANSI Board ofStandards Review, substantial agreement has been reached by directly andmaterially affected interests. Substantial agreement means much more thana simple majority, but not necessarily unanimity. Consensus requires that allviews and objections be considered, and t

5、hat a concerted effort be madetowards their resolution.The use of American National Standards is completely voluntary; theirexistence does not in any respect preclude anyone, whether he has approvedthe standards or not, from manufacturing, marketing, purchasing, or usingproducts, processes, or proce

6、dures not conforming to the standards.The American National Standards Institute does not develop standards andwill in no circumstances give an interpretation of any American NationalStandard. Moreover, no person shall have the right or authority to issue aninterpretation of an American National Stan

7、dard in the name of the AmericanNational Standards Institute. Requests for interpretations should beaddressed to the secretariat or sponsor whose name appears on the titlepage of this standard.CAUTION NOTICE: This American National Standard may be revised orwithdrawn at any time. The procedures of t

8、he American National StandardsInstitute require that action be taken periodically to reaffirm, revise, orwithdraw this standard. Purchasers of American National Standards mayreceive current information on all standards by calling or writing the AmericanNational Standards Institute.American National

9、StandardPublished byAmerican National Standards Institute, Inc.25 West 43rd Street, New York, NY 10036Copyright 2003 by Information Technology Industry Council (ITI)All rights reserved.No part of this publication may be reproduced in anyform, in an electronic retrieval system or otherwise,without pr

10、ior written permission of ITI, 1250 Eye Street NW, Washington, DC 20005. Printed in the United States of AmericaCAUTION: The developers of this standard have requested that holders of patents that may be re-quired for the implementation of the standard disclose such patents to the publisher. However

11、, nei-ther the developers nor the publisher have undertaken a patent search in order to identify which, ifany, patents may apply to this standard. As of the date of publication of this standard, followingcalls for the identification of patents that may be required for the implementation of the stand

12、ard,notice of one or more such claims has been received. By publication of this standard, no positionis taken with respect to the validity of this claim or of any rights in connection therewith. The knownpatent holder(s) has (have), however, filed a statement of willingness to grant a license undert

13、hese rights on reasonable and nondiscriminatory terms and conditions to applicants desiring to ob-tain such a license. Details may be obtained from the publisher. No further patent search is con-ducted by the developer or publisher in respect to any standard it processes. No representation ismade or

14、 implied that this is the only license that may be required to avoid infringement in the use ofthis standard.iContentsForeword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viIntroduction . . . . . . . . . . . .

15、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Normative references . . . . . . . . . . . .

16、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.1 Qualification and availability of references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.2 Published standard references . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17、 . . . . . . . . . . . . . . . . . 12.3 References under development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.4 Other references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Defini

18、tions, abbreviations and conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.1 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.2 Abbreviations . . . . . . . . . . . . . .

19、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.3 Keywords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.4 Editorial conventions . . . . . . . . . . . . . . . . . . . . . . . .

20、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94.1 Structure and concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21、 . . . . . . . . . . . . . . . 94.2 Device management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.3 Precise delivery of SCSI commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124.4 Confirmed complet

22、ion of FCP I/O Operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134.5 Retransmission of unsuccessfully transmitted data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144.6 Task retry identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23、 . . . . . . . . . . . . . . . . . 144.7 Discovery of FCP capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154.8 Task management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154.9 Clear

24、ing effects of task management, FCP, FC-FS, and FC-AL-2 actions. . . . . . . . . . . 164.10 I_T nexus loss notification events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184.11 Transport Reset notification events. . . . . . . . . . . . . . . . . . . . . . . . .

25、 . . . . . . . . . . . . . . . 194.12 Port login/logout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194.13 Process login/logout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194.14

26、 Link management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 Fibre Channel protocol overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215.1 FCP addressing and Exchange identification

27、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215.2 SCSI third-party device identifier for the Fibre Channel protocol . . . . . . . . . . . . . . . . . . 215.3 Use of World Wide Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

28、5.4 FCP Information Units (IUs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225.5 Fibre Channel protocol standard formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235.6 FC-FS mappings to SCSI-3 functionality . . . . . . .

29、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245.6.1 FC-FS frame header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245.6.2 Frame header fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30、. . . 245.6.2.1 R_CTL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245.6.2.2 D_ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245.6.2.3 CS_CTL . . . . . . . . . . . . .

31、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245.6.2.4 S_ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245.6.2.5 TYPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32、. . . . . . . . . . . . . . . . 245.6.2.6 F_CTL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255.6.2.7 SEQ_ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255.6.2.8 DF_CTL

33、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255.6.2.9 SEQ_CNT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255.6.2.10 OX_ID . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34、 . . . . . . . . . . . . . . . . . . . . . . . . . . 255.6.2.11 RX_ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25ii6 FCP basic and extended link service definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

35、276.1 Overview of link service requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276.2 Overview of Process Login/Logout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276.3 Process Login (PRLI) . . . . . . . . . . . . . . . .

36、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286.3.1 Use of Process Login by the Fibre Channel protocol . . . . . . . . . . . . . . . . . . . . . . . 286.3.2 Process_Associator requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286.3.3 New

37、 or repeated PRLI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286.3.4 Process Login request FCP Service Parameter page format . . . . . . . . . . . . . . . . 296.3.5 Process Login accept FCP Service Parameter page format . . . . . . . . . . . . . . . .

38、 . 326.4 Process Logout (PRLO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336.5 Read Exchange Concise (REC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337 FC-4 specific name server objects . . . . . . .

39、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357.1 Overview of FC-4 specific objects for the Fibre Channel protocol . . . . . . . . . . . . . . . . . 357.2 FC-4 Features object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

40、 . . . . 357.3 FC-4 Descriptor object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358 FC-4 Link Service definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378.1 FC-4 Link Services for t

41、he Fibre Channel protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378.2 Sequence Retransmission Request (SRR). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378.3 FCP FC-4 Link Service Reject . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

42、. . . . . . . . . . 399 FCP Information Unit (IU) formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 419.1 FCP_CMND IU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 419.1.1 FCP_CMND IU fo

43、rmat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 419.1.2 FCP_CMND IU Field descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 419.1.2.1 FCP_LUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

44、. . . . . . . . . . . . . . . . . 419.1.2.2 COMMAND REFERENCE NUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 429.1.2.3 task attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 429.1.2.4 TASK MANAGEMENT FLAGS .

45、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 429.1.3 Additional mechanisms for performing task management functions - ABORT TASK 469.2 FCP_XFER_RDY IU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 469.2.1 Over

46、view and format of FCP_XFER_RDY IU . . . . . . . . . . . . . . . . . . . . . . . . . . . . 469.2.2 fcp_data_ro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 479.2.3 fcp_burst_len . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

47、 . . . . . . . . . . . . . . . . . . . . . . . 479.3 FCP_DATA IU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 479.4 FCP_RSP IU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

48、. . . . . 489.4.1 Overview and format of FCP_RSP IU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 489.4.2 FCP_CONF_REQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 499.4.3 fcp_resid_under . . . . . . . . . . . . . . . .

49、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 509.4.4 fcp_resid_over . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 509.4.5 fcp_sns_len_valid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 509.4.6 fcp_rsp_len_valid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 509.4.7 SCSI status code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 509.4.8 fcp_resid .