[ewg] Re: [ofw] SC'09 BOF - Meeting notes

[Liran Liss]

As far as core APIs go, the patch set introduces 2 basic additions
rather than changes:
- A new ABI function to resolve gids to macs - ib_get_mac()
- A new kernel ib_device function to get the port transport -
ib_get_port_transport().
There are no changes to the Verbs API.

All the address resolution stuff is contained in the cma code, so I
think we code extend its logic in the future without breaking things at
the interface level.
Do you have anything specific in mind?

--Liran
 

-----Original Message-----
From: ewg-bounces at lists.openfabrics.org
[mailto:ewg-bounces at lists.openfabrics.org] On Behalf Of Roland Dreier
Sent: Thursday, November 19, 2009 9:17 PM
To: Richard Frank
Cc: ofw at lists.openfabrics.org; OpenFabrics EWG
Subject: Re: [ewg] Re: [ofw] SC'09 BOF - Meeting notes


 > How can 1500 lines out of 240k lines be a big change.. do I have
these  > numbers right - is the  > big change you are referring too?

If there are significant changes to the core APIs -- and IBoE has
exactly this impact -- then yes it can be a big change even if the line
count is small.

 > What is the risk area that you are worried about .. do you think it
> will break current  > transports or existing ULPs ?

I am worried that no one has thought through all the issues and corner
cases around address resolution, multicast, etc, and that when we do get
a standardized version of IBoE, we'll have to break core APIs yet again.

 - R.
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