SoftRoce cannot work with NVMe-oF target

[optimistyzy]

Test SPDK NVMe-oF target with Software Roce. While increasing the queue depth, we always have the following issue while calling ibv_poll_cq:
nvmf_tgt.c: 255:spdk_nvmf_startup: NOTICE: Acceptor running on core 0 on socket 0
rdma.c:1707:spdk_nvmf_rdma_qpair_poll: ERROR: CQ error on CQ 0x1a69230, Request 0x27695128 (12): transport retry counter exceeded

[divyanks]

I was setting up SPDK NVMe-OF with softRoCE on linux kernel 4.15.0.
I am not able to discover the nvme target from another linux client.
However, I can see that its getting discovered on nvme target ie using same initiator as the target
very well.
Used the following conf
======snip====
NQN nqn.2016-06.io.spdk:cnode2
Listen RDMA 192.168.106.163:4420
AllowAnyHost Yes
Host nqn.2016-06.io.spdk:init
SN SPDK00000000000002
Namespace Malloc0
Namespace Malloc1
Namespace AIO0
Namespace AIO1

===snip

Error am getting at the client side is
root@amit-VirtualBox:/RCoE/targets/nvme-cli# ./nvme discover -t rdma -a 192.168.106.163 -s 4420
Failed to write to /dev/nvme-fabrics: Connection reset by peer

But request did not reach the nvme target as I had started it in debug mode.
Any help would be appreciated.