CONFIG_INFINIBAND_QEDR is not available for thedefaultarchitecture x86.
Result is shown for architecture 64BIT

QLogic RoCE driver

modulename: qedr.ko

configname: CONFIG_INFINIBAND_QEDR

Linux Kernel Configuration
└─>Device Drivers
└─>InfiniBand support
└─>QLogic RoCE driver
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This driver provides low-level InfiniBand over Ethernet
support for QLogic QED host channel adapters (HCAs).

source code: