[ofa-general] Re: [ewg] OFED 1.3 rc4 update

[Pradeep Satyanarayana]

Eli Cohen wrote:
>> This problem was seen on a ehca that supports SRQ.
>>
> 
> Please reply how many scatter entries does ehca support when working
> in SRQ mode? Also any piece of info I might need to try and mimic ehca
> behaviour on Mellanox devices. I will appreciate if you can repeat the
> exact sequence of actions you do to reproduce this.

Hello Eli,

Ehca supports fewer than 16 s/g entries- hence the srq patch addresses that issue. 
The sequence of steps that I followed for the touch test:
1. On a freshly booted system, configure ib0 and assign an IP addresss
2. Switch to connected mode and change mtu
3. ping remote ib interface (already in CM mode)
4. modprobe -r ib_ehca

I see a series of cascading failures in /var/log/messages, starting with 
the issue of not being able to destroy the cq (specifically rcq)

Pradeep