Bidirectional Remote Procedure Call on RPC-over-RDMA Transports
draft-ietf-nfsv4-rpcrdma-bidirection-08

Note: This ballot was opened for revision 07 and is now closed.

(Spencer Dawkins) Yes

Alexey Melnikov Yes

(Jari Arkko) No Objection

(Alia Atlas) No Objection

Deborah Brungard No Objection

(Ben Campbell) No Objection

Comment (2017-03-01 for -07)
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Edit: I meant to add, thanks for a well written and easy to read document!

Some minor comments:

-4.1: This is the first mention of "credits", and there is no definition. I realize that the term is defined in the reference from the previous section. It would be helpful to mention that in the context of that reference.
--  Are there any head-of-line-blocking issues introduced by bidirectional transactions? For example, can a reply get stuck behind requests that are blocked by flow control?

-5.4, 4th paragraph, last sentence: Can a reverse requestor reasonably give up or time out, rather than wait "indefinitely"?

-8:  This implies that reverse direction transactions do not change anything.If that is the case, please say so explicitly. For example, Is there any change to authentication for reverse calls? I am not an expert in direct memory access transport protocols; are there every situation where authentication depends on an initial request from the client?

Alissa Cooper No Objection

(Stephen Farrell) No Objection

(Joel Jaeggli) No Objection

Suresh Krishnan No Objection

Mirja K├╝hlewind No Objection

Comment (2017-03-01 for -07)
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Thanks for the well written document!

Minor comments:

1) Please double-check if maybe more normative language is needed; maybe some of the lower case musts and shoulds, could/should be upper case, especially in section 4.2 and 4.3...?

2) sec 5.4: I guess if available the requester in reverse direction could also open a TCP connection to retransmit?

3) What's DDP?

4) Are there any security impacts because a connection might stay open longer than previously?

(Terry Manderson) No Objection

(Kathleen Moriarty) No Objection

Comment (2017-02-28 for -07)
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Thanks for taking into account the SecDir review comments.