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d781b129f1
A duplicate RDMA read request can fool the responder into NAKing a new RDMA read request because the responder wasn't keeping track of whether the queue of RDMA read requests had been sent at least once. For example, requester sends 4 2K byte RDMA read requests, times out, and resends the first, then sees the 4 responses, then sends a 5th RDMA read or atomic operation. The responder sees the 4 requests, sends 4 responses, sees the resent 1st request, rewinds the queue, then sees the 5th request but thinks the queue is full and that the requester is invalidly sending a 5th new request. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com> |
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