Driver configuration files:

/etc/infiniband/openib.conf     - Configuration file for openibd service
/etc/modprobe.d/mlnx.conf       - Configuration file for MLNX_OFED's kernel modules
/etc/infiniband/connectx.conf   - HCA port type configuration
/etc/modprobe.d/ib_ipoib.conf   - IPoIB aliases and kernel module parameters
/etc/sysconfig/opensm           - Configuration file for opensmd service