3 Replies Latest reply on Aug 13, 2015 10:16 AM by dharadesair

    RDMA issue with SoftRoCE

      I am trying to check working of RDMA with SoftRoCE. When I try to run rping it sends me "cma event RDMA_CM_EVENT_UNREACHABLE, error -110"

      what can be the possible scenarios where this error can occur.

        • Re: RDMA issue with SoftRoCE

          Can you ping to the peer using linux ping (not the RDMA ping)?

          What is the command line you used on both peers?

            • Re: RDMA issue with SoftRoCE

              # rxe_cfg start

              IBOE V2

                Name   Link  Driver     Speed  NMTU  IPv4_addr      RDEV  RMTU

                p4p1   yes   r8169             1500  rxe0  1024  (3)

                wlan0  no    rtl8192cu         1500

              # ping

              PING ( 56(84) bytes of data.

              64 bytes from icmp_seq=1 ttl=64 time=0.024 ms


              I am able to ping the machine using linux ping

              • Re: RDMA issue with SoftRoCE

                More details -


                # rping -sd -a -p 1234

                port 1234

                created cm_id 0x6090c0

                rdma_bind_addr successful




                # rping -cd -a -p 1234

                port 1234

                created cm_id 0x6090c0

                cma_event type RDMA_CM_EVENT_ADDR_RESOLVED cma_id 0x6090c0 (parent)

                cma_event type RDMA_CM_EVENT_ROUTE_RESOLVED cma_id 0x6090c0 (parent)

                rdma_resolve_addr - rdma_resolve_route successful

                created pd 0x60b630

                created channel 0x60b650

                created cq 0x60b670

                created qp 0x60b720

                rping_setup_buffers called on cb 0x606010

                allocated & registered buffers...

                cq_thread started.

                cma_event type RDMA_CM_EVENT_UNREACHABLE cma_id 0x6090c0 (parent)

                cma event RDMA_CM_EVENT_UNREACHABLE, error -110