On Fri, Jun 25, 2021 at 11:33:58AM +0530, Anand Khoje wrote: > > If the above change is to be made, there could arise a scenario in which: > In case of a cache_update event, another application/module could try to > call ib_query_port() and read subnet_prefix while the cache is still getting > updated and the application/module could end up reading a stale value of > subnet_prefix. Applications relying on this data must hook the event and update their state when the event fires. So long as ib_query_port returns the correct value in the event handler it is all OK. This whole thing is racy - the HW can change the subnet_prefix at anytime, this is just shuffling the race around. > - Is it possible that different GIDs in the gid_table will have different > values of subnet_prefix? Valid GIDs should have the same prefix Jason
