[openib-general] Re: [PATCH 9 of 18] ipath - char devices for diagnostics and lightweight subnet management

Bryan O'Sullivan bos at pathscale.com
Thu Mar 23 01:51:03 PST 2006


On Thu, 2006-03-23 at 11:37 +0200, Michael S. Tsirkin wrote:

> I understand they do, but they could just use the parts of IB stack and never
> notice.

No, in some cases they want there to not be an IB stack present, which
is not the same thing at all as not caring if it's there.

> I think IB stack is modest, as core modules go.

I don't understand why you persist on this point.  We have a need for an
SMA that is not tied to the IB stack.  The kernel code to support it is
about 500 lines long, about 2% of the driver.

> And I don't believe you can save much since as a solution you seem to have
> re-implemented the full IB stack in your low level driver:

No, we haven't.  The IB protocols are implemented in the ib_ipath
module, not the core driver.

	<b




More information about the general mailing list