Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
ibacm-devel
libcxgb3-static
libcxgb4-static
libhfi1-static
libi40iw-devel-static
libibcm-devel
libibcm-static
libibumad-devel
libibumad-static
libibverbs-devel
libibverbs-devel-static
libipathverbs-static
libmlx4-static
libmlx5-static
libmthca-static
libnes-static
libocrdma-static
librdmacm-devel
librdmacm-static
rdma-core-devel
rdma-core-devel(x86-64)

Requires :

libmlx5.so.1()(64bit)
libibcm = 15-6.el7
libibverbs.so.1()(64bit)
ibacm = 15-6.el7
librdmacm = 15-6.el7
libibumad.so.3()(64bit)
libmlx4.so.1()(64bit)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libibverbs = 15-6.el7
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
libibcm.so.1()(64bit)
rdma-core(x86-64) = 15-6.el7
libibumad = 15-6.el7
rpmlib(PayloadIsXz) <= 5.2-1
librdmacm.so.1()(64bit)

Content of RPM :
/usr/include/infiniband
/usr/include/infiniband/acm.h
/usr/include/infiniband/acm_prov.h
/usr/include/infiniband/arch.h
/usr/include/infiniband/cm.h
/usr/include/infiniband/cm_abi.h
/usr/include/infiniband/ib.h
/usr/include/infiniband/kern-abi.h
/usr/include/infiniband/mlx4dv.h
/usr/include/infiniband/mlx5dv.h
/usr/include/infiniband/opcode.h
/usr/include/infiniband/sa-kern-abi.h
/usr/include/infiniband/sa.h
/usr/include/infiniband/umad.h
/usr/include/infiniband/umad_cm.h
/usr/include/infiniband/umad_sa.h
/usr/include/infiniband/umad_sm.h
/usr/include/infiniband/umad_str.h
/usr/include/infiniband/umad_types.h
/usr/include/infiniband/verbs.h
/usr/include/rdma
/usr/include/rdma/rdma_cma.h
/usr/include/rdma/rdma_cma_abi.h
/usr/include/rdma/rdma_verbs.h
/usr/include/rdma/rsocket.h
/usr/lib64/libibcm.so
/usr/lib64/libibumad.so
/usr/lib64/libibverbs.so
/usr/lib64/libmlx4.so
/usr/lib64/libmlx5.so
There is 166 files more in these RPM.