Hi here is the output:
# ls -l /dev/infiniband/
total 0
crw-rw-rw-. 1 root root 10, 56 Jan 1 10:33 rdma_cm
and this:
# cat /etc/udev/rules.d/90-ib.rules
KERNEL=="umad*", NAME="infiniband/%k" MODE="0666"
KERNEL=="issm*", NAME="infiniband/%k"
KERNEL=="ucm*", NAME="infiniband/%k", MODE="0666"
KERNEL=="uverbs*", NAME="infiniband/%k", MODE="0666"
KERNEL=="ucma", NAME="infiniband/%k", MODE="0666"
KERNEL=="rdma_cm", NAME="infiniband/%k", MODE="0666"
What to do next ?