Hello, Has anyone already tried to process the work completions generated by a HCA after the state of a queue pair has been changed to IB_QPS_ERR ? With the hardware/firmware/driver combination I have tested I have observed the following: * Multiple completions with the same wr_id and nonzero (error) status were received by the application, while all work requests queued with the flag IB_SEND_SIGNALED had a unique wr_id. * Completions with non-zero (error) status and a wr_id / opcode combination were received that were never queued by the application. Note: some work requests were queued with and some without the flag IB_SEND_SIGNALED. I'm not sure however whether that has anything to do with the observed behavior.
This behavior is easy to reproduce. If I interpret the InfiniBand Architecture Specification correctly, this behavior is non-compliant. Has anyone been looking into this before ? Bart. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
