Greg,

I don't think the iPath interface is documented outside the headers, which are 
included as part of the QLogic PSM package. I believe that package is included 
with stock OFED. iPath is basically the hardware interface at the very bottom 
of the QLogic software stack, it wasn't intended for normal use.

-----Original Message-----
From: Roland Dreier [mailto:rol...@purestorage.com]
Sent: Tuesday, January 03, 2012 6:41 PM
To: Greg I Kerr
Cc: Mike Heinz; linux-rdma@vger.kernel.org
Subject: Re: Write Packets to InfiniBand HCA

It is possible with ConnectX (cf "MLX QPs" in the kernel driver).
However I don't know what documentation
is available and some hacking would be needed to use this for something more 
general than sending MADs on special QPs.

On Tue, Jan 3, 2012 at 8:43 AM, Greg I Kerr <ker...@husky.neu.edu> wrote:
> Yes I should have mentioned that I am using a Mellanox Connect-X
> adapter. Do you know where I can find documentation for QLogic's
> iPath? A quick google search didn't seem to turn anything up.
>
> Thanks for the information.
>
> - Greg Kerr
>
> On Tue, Jan 3, 2012 at 9:53 AM, Mike Heinz <michael.he...@qlogic.com> wrote:
>> That would depend on which HCA you are using. I know that you can use 
>> QLogic's iPath interface to do what you want, but I don't think it is 
>> possible through the verbs interface available through stock OFED.
>>
>> -----Original Message-----
>> From: linux-rdma-ow...@vger.kernel.org
>> [mailto:linux-rdma-ow...@vger.kernel.org] On Behalf Of Greg I Kerr
>> Sent: Monday, January 02, 2012 9:50 PM
>> To: linux-rdma@vger.kernel.org
>> Subject: Write Packets to InfiniBand HCA
>>
>> Hi,
>>
>> Does anyone know if it is or isn't possible to put the HCA in some kind of 
>> "raw" mode where I can compose a packet in software and write it to the 
>> card? This is obviously in comparison to calling ibv_post_send and having a 
>> work request converted into a packet.
>>
>> Thanks,
>>
>> Greg Kerr
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