Michael S. Tsirkin wrote:
I believe a better solution is for everyone to use cached records, if
they exist, with a feedback mechanism from the CM that removes paths on
a connection failure or path migration event.
Ack timeout on an RC QP is also a good indication we should redo the lookup.
Do you know if we get a specific event for this? (I don't remember.)
Both the ib_cm and rdma_cm have interfaces that allow a user to report
events on a connection. They are used for path migration today, but we
could easily extend them.
To minimize issues, I think we'll want some sort of feedback mechanism
in place before enabling caching by default.
- Sean
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