config SUNRPC tristate depends on MULTIUSER config SUNRPC_GSS tristate select OID_REGISTRY depends on MULTIUSER config SUNRPC_BACKCHANNEL bool depends on SUNRPC config SUNRPC_SWAP bool depends on SUNRPC config RPCSEC_GSS_KRB5 tristate "Secure RPC: Kerberos V mechanism" depends on SUNRPC && CRYPTO depends on CRYPTO_MD5 && CRYPTO_DES && CRYPTO_CBC && CRYPTO_CTS depends on CRYPTO_ECB && CRYPTO_HMAC && CRYPTO_SHA1 && CRYPTO_AES depends on CRYPTO_ARC4 default y select SUNRPC_GSS help Choose Y here to enable Secure RPC using the Kerberos version 5 GSS-API mechanism (RFC 1964). Secure RPC calls with Kerberos require an auxiliary user-space daemon which may be found in the Linux nfs-utils package available from http://linux-nfs.org/. In addition, user-space Kerberos support should be installed. If unsure, say Y. config CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPES bool "Secure RPC: Disable insecure Kerberos encryption types" depends on RPCSEC_GSS_KRB5 default n help Choose Y here to disable the use of deprecated encryption types with the Kerberos version 5 GSS-API mechanism (RFC 1964). The deprecated encryption types include DES-CBC-MD5, DES-CBC-CRC, and DES-CBC-MD4. These types were deprecated by RFC 6649 because they were found to be insecure. N is the default because many sites have deployed KDCs and keytabs that contain only these deprecated encryption types. Choosing Y prevents the use of known-insecure encryption types but might result in compatibility problems. config SUNRPC_DEBUG bool "RPC: Enable dprintk debugging" depends on SUNRPC && SYSCTL select DEBUG_FS help This option enables a sysctl-based debugging interface that is be used by the 'rpcdebug' utility to turn on or off logging of different aspects of the kernel RPC activity. Disabling this option will make your kernel slightly smaller, but makes troubleshooting NFS issues significantly harder. If unsure, say Y. config SUNRPC_XPRT_RDMA tristate "RPC-over-RDMA transport" depends on SUNRPC && INFINIBAND && INFINIBAND_ADDR_TRANS default SUNRPC && INFINIBAND select SG_POOL help This option allows the NFS client and server to use RDMA transports (InfiniBand, iWARP, or RoCE). To compile this support as a module, choose M. The module will be called rpcrdma.ko. If unsure, or you know there is no RDMA capability on your hardware platform, say N.