[ofa-general] [PATCH] ipoib: null tx/rx_ring skb pointers on free

Pradeep Satyanarayana pradeeps at linux.vnet.ibm.com
Mon Nov 10 15:30:34 PST 2008


Or Gerlitz wrote:
> Pradeep Satyanarayana wrote:
>> If I am not mistaken we saw a problem that showed similar
>> characteristics more than two years ago on IBM platforms. The same
>> issue of rx_ring reusing tx_ring skbs and so on and would show up only
>> under stress. This was with UD mode (before CM came into the picture)
>> and it turned out to be a driver issue. 
> Can you send pointer to the relevant thread / commit that solved this
> issue?
Or,

Even though I searched in the archives could not locate that particular one.
I know that Nam submitted the patch and it was in the June/July 2006 time frame. 
It was a missing read memory barrier in the ehca driver. I am copying him so that 
he might help.

Pradeep




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