Re: [ofa-general] Re: [PATCH RFC] RDMA/CMA: Allocate PS_TCP ports from the host TCP port space.

Jeff Garzik
2007-08-16T02:27:24Z

Steve Wise wrote:
>
>
> David Miller wrote:
>> From: Sean Hefty <mshefty@ichips.intel.com>
>> Date: Thu, 09 Aug 2007 14:40:16 -0700
>>
>>> Steve Wise wrote:
>>>> Any more comments?
>>> Does anyone have ideas on how to reserve the port space without using
>>> a struct socket?
>>
>> How about we just remove the RDMA stack altogether? I am not at all
>> kidding. If you guys can't stay in your sand box and need to cause
>> problems for the normal network stack, it's unacceptable. We were
>> told all along the if RDMA went into the tree none of this kind of
>> stuff would be an issue.
>
> I think removing the RDMA stack is the wrong thing to do, and you
> shouldn't just threaten to yank entire subsystems because you don't like
> the technology. Lets keep this constructive, can we? RDMA should get
> the respect of any other technology in Linux. Maybe its a niche in your
> opinion, but come on, there's more RDMA users than say, the sparc64
> port. Eh?

It's not about being a niche. It's about creating a maintainable
software net stack that has predictable behavior.

Needing to reach out of the RDMA sandbox and reserve net stack resources
away from itself travels a path we've consistently avoided.

>> I will NACK any patch that opens up sockets to eat up ports or
>> anything stupid like that.
>
> Got it.

Ditto for me as well.

Jeff