| Provides low-level InfiniBand/RDMA and `RoCE <https://community.mellanox.com/s/article/recommended-network-configuration-examples-for-roce-deployment>`_ support.
+**CONFIG_MLX5_SF=(y/n)**
+
+| Build support for subfunction.
+| Subfunctons are more light weight than PCI SRIOV VFs. Choosing this option
+| will enable support for creating subfunction devices.
**External options** ( Choose if the corresponding mlx5 feature is required )