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.

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

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

What is the command line you used on both peers?

rxe_cfg start


Name Link Driver Speed NMTU IPv4_addr RDEV RMTU

p4p1 yes r8169 1500 rxe0 1024 (3)

wlan0 no rtl8192cu 1500


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