Re: software iwarp stack update

On Wed, Jun 15, 2011 at 5:43 PM, Bernard Metzler [off-list ref] wrote:

after rebasing to davem/net-next-2.6.git, I formatted a patch adding
to the initial 'siw' driver posting from last October. Given the rather
substantial amount of changes and time elapsed, I am not sure if people
would better like a complete re-posting of all files.
If I don't hear objection before tomorrow I would post it as an
increment - as summarized below.

Documentation in general and for sysfs attributes in particular seems
to be missing ?

Also, the following statement in siw_main.c:

ibdev->modify_port = NULL;

causes the following behavior if ib_modify_port() is invoked on a
softiwarp port:

BUG: unable to handle kernel NULL pointer dereference at           (null)
IP: [<          (null)>]           (null)
Call Trace:
 [<ffffffffa0313c15>] ? ib_modify_port+0x55/0x60 [ib_core]
[ ... ]

Shouldn't the siw driver return an error code instead of setting
ibdev->modify_port to NULL ?

Bart.
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Bart, Roland, all,

many thanks for the suggestions and input. I am happy
to see interest in SoftiWARP.

In the hope to contribute something usefull, I will now
send a complete new set of patches against net-next.
It adds software iWARP support on top of TCP kernel sockets
and fits into the linux-rdma kernel stack.

Major changes to the previous (first) posting from October last
year include some kernel client support, restructuring of the
connection management code and general code cleanup.
I hope all issues which were rised after the first posting are
resolved. Thanks again for the valuable feedback.

Please take the current code contribution as work in progress.
Any comment and input is highly appreciated.


Here comes a shortlog of what you should expect:

Bernard Metzler (14):
      SIWv2: Kconfig and Makefile
      SIWv2: iWARP Protocol headers: iwarp.h
      SIWv2: Main header file: siw.h
      SIWv2: Module initialization: siw_main.c
      SIWv2: User interface: siw_verbs.h, siw_verbs.c, siw_user.h, siw_ae.c
      SIWv2: Connection management: siw_cm.c, siw_cm.h
      SIWv2: Object management: siw_obj.c, siw_obj.h
      SIWv2: Queue pair: siw_qp.c
      SIWv2: Completion queue: siw_cq.c
      SIWv2: Transmit path: siw_qp_tx.c
      SIWv2: Receive path: siw_qp_rx.c
      SIWv2: Debugging and Tracing: siw_debug.c, siw_debug.h
      SIWv2: Memory management: siw_mem.c
      SIWv2: Documentation: siw.txt



Many thanks,
Bernard.