[ofa-general] [PATCH RFC v3 1/2] RDMA/Core:MEM_MGT_EXTENSIONS support

[Talpey, Thomas]

At 03:59 PM 5/27/2008, Steve Wise wrote:
>Talpey, Thomas wrote:
>> What happens if the upper layer gives up and invalidates the stag itself,
>> and the peer's RDMA Read response arrives later? Nothing bad, I assume,
>> and the peer's response is denied?
>>
>>   
>
>It behaves just like any other tagged message arriving and the target 
>stag is invalid.  The connection is torn down via an RDMAP TERMINATE...

I was wondering more about the dangling stag reference that the original work
request carried. Normally, it would reference the still-valid stag, but if that
stag was torn down (causing the invalidation to point to nothing), or worse,
re-bound (causing it to point at something else!), then it's a possible issue?

Sorry to seem paranoid here. Storage is pretty sensitive to silent data
corruption avenues. Because they always find a way to happen.

Tom.