SUNRPC: RPC client should retry with different versions of rpcbind

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/fs/Kconfig b/fs/Kconfig
index a42f767dcdd5..20bec7767dd8 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -1734,6 +1734,18 @@ config SUNRPC
 config SUNRPC_GSS
         tristate
 
+config SUNRPC_BIND34
+        bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)"
+        depends on SUNRPC && EXPERIMENTAL
+        help
+          Provides kernel support for querying rpcbind servers via versions 3
+          and 4 of the rpcbind protocol.  The kernel automatically falls back
+          to version 2 if a remote rpcbind service does not support versions
+          3 or 4.
+
+          If unsure, say N to get traditional behavior (version 2 rpcbind
+          requests only).
+
 config RPCSEC_GSS_KRB5
         tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
         depends on SUNRPC && EXPERIMENTAL