[openib-general] ucma into kernel.org

[Michael S. Tsirkin]

Quoting r. Sean Hefty <mshefty at ichips.intel.com>:
> Subject: Re: ucma into kernel.org
> 
> Michael S. Tsirkin wrote:
> > TCP sockets just expose this to application through the
> > TCP_SYNCNT option.
> > 
> > Which leads again to my suggestion: since both TCP and IB CM have this, let us
> > change max_cm_retries to max_request_retries, and add this in rdma_cm as a
> > generic option.
> 
> I'm not against adding in generic option for this, but the retry values have 
> different limits.  IB is limited to a maximum of 15, while TCP has a maximum of 255.

What limits IB retry cound to 15? I would expect it to be arbitrary.  Note I am
talking about CM REQ retries that we do in software and that are not passed in
any message.


-- 
MST