nfsd: new netlink ops to get/set server pool_mode

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

include/uapi/linux/nfsd_netlink.h

@@ -70,6 +70,14 @@ enum {
 	NFSD_A_SERVER_SOCK_MAX = (__NFSD_A_SERVER_SOCK_MAX - 1)
 };
 
+enum {
+	NFSD_A_POOL_MODE_MODE = 1,
+	NFSD_A_POOL_MODE_NPOOLS,
+
+	__NFSD_A_POOL_MODE_MAX,
+	NFSD_A_POOL_MODE_MAX = (__NFSD_A_POOL_MODE_MAX - 1)
+};
+
 enum {
 	NFSD_CMD_RPC_STATUS_GET = 1,
 	NFSD_CMD_THREADS_SET,
@@ -78,6 +86,8 @@ enum {
 	NFSD_CMD_VERSION_GET,
 	NFSD_CMD_LISTENER_SET,
 	NFSD_CMD_LISTENER_GET,
+	NFSD_CMD_POOL_MODE_SET,
+	NFSD_CMD_POOL_MODE_GET,
 
 	__NFSD_CMD_MAX,
 	NFSD_CMD_MAX = (__NFSD_CMD_MAX - 1)