Re: SoftiWARP: new patchset

Hi Stefan,

thanks for asking. I kind of went astray from further pushing
siw for mainline integration. That time I did all the suggested
changes, and some more work went into it. I updated
gitorious.org/softiwarp accordingly, but did not send again
to the list. It might be a good idea to start another attempt.

I also saw SoftRoCE aiming for mainline integration. Don't know
exactly their status, I guess it's about the same.

We are happily using siw, I have it at
gitorious.org/softiwarp, where I maintain it - loosely.
I agree that a software based RDMA stack can be very useful.
That's why I did that work.

Many Thanks,
Bernard.


linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org wrote on 09/05/2012 12:03:20 PM:

From: Stefan Metzmacher <redacted>
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Date: 09/05/2012 12:07 PM
Subject: Re: SoftiWARP: new patchset
Sent by: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org

Hi Bernard,

quoted

many thanks for commenting on the software iWARP RDMA
driver code is sent about 5 weeks ago. I hope I now
incorporated all recent suggestions and fixes.

These are the main changes:

o changing siw device attachment to be dynamic based on
  netlink events
o enabling inline data for kernel clients
  (now inline data are stored within wqe structure)
o bitmask access to packet headers removing the
  '#if defined(__LITTLE_ENDIAN_BITFIELD)' style
o moving debug stuff to debugfs
o shrinking the stack size of the core tx
  function
o updates to documentation


Due to the number of lines of code changed, it might be
appropriate if I send a complete new patchset. I'll
keep patch packaging as before.

I made the current siw code available at
www.gitorious.org/softiwarp
and will keep it up-to-date. This code is now free
of kernel version dependencies. It has been tested
on different kernel versions from version 2.6.36.2
up to 3.0.0-rc1+. I tested on both big an little
endian machines.

I would be very happy to get further input. I work on
this project only part of my time - all your input speeds
up code maturing. I would be happy if the code reaches an
acceptable status soon. Thank you.

I'm wondering what the status of this patchset is?

Do you get any feedback?

It would be very good if the softiwarp module could be
included in the mainline kernel.

Hopefully Samba will get support for SMB-Direct (SMB2 over RDMA) support
in future. And having RDMA support without hardware support would be very
good for testing and also for usage on the client side against a server
which has hardware RDMA support.

For me at least rping tests work fine using siw.ko on a 3.2.x kernel on
Ubuntu 12.04.

metze


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