v4.19.13 snapshot.
diff --git a/include/linux/lockd/xdr.h b/include/linux/lockd/xdr.h
new file mode 100644
index 0000000..7ab9f26
--- /dev/null
+++ b/include/linux/lockd/xdr.h
@@ -0,0 +1,119 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * linux/include/linux/lockd/xdr.h
+ *
+ * XDR types for the NLM protocol
+ *
+ * Copyright (C) 1996 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifndef LOCKD_XDR_H
+#define LOCKD_XDR_H
+
+#include <linux/fs.h>
+#include <linux/nfs.h>
+#include <linux/sunrpc/xdr.h>
+
+#define SM_MAXSTRLEN 1024
+#define SM_PRIV_SIZE 16
+
+struct nsm_private {
+ unsigned char data[SM_PRIV_SIZE];
+};
+
+struct svc_rqst;
+
+#define NLM_MAXCOOKIELEN 32
+#define NLM_MAXSTRLEN 1024
+
+#define nlm_granted cpu_to_be32(NLM_LCK_GRANTED)
+#define nlm_lck_denied cpu_to_be32(NLM_LCK_DENIED)
+#define nlm_lck_denied_nolocks cpu_to_be32(NLM_LCK_DENIED_NOLOCKS)
+#define nlm_lck_blocked cpu_to_be32(NLM_LCK_BLOCKED)
+#define nlm_lck_denied_grace_period cpu_to_be32(NLM_LCK_DENIED_GRACE_PERIOD)
+
+#define nlm_drop_reply cpu_to_be32(30000)
+
+/* Lock info passed via NLM */
+struct nlm_lock {
+ char * caller;
+ unsigned int len; /* length of "caller" */
+ struct nfs_fh fh;
+ struct xdr_netobj oh;
+ u32 svid;
+ struct file_lock fl;
+};
+
+/*
+ * NLM cookies. Technically they can be 1K, but Linux only uses 8 bytes.
+ * FreeBSD uses 16, Apple Mac OS X 10.3 uses 20. Therefore we set it to
+ * 32 bytes.
+ */
+
+struct nlm_cookie
+{
+ unsigned char data[NLM_MAXCOOKIELEN];
+ unsigned int len;
+};
+
+/*
+ * Generic lockd arguments for all but sm_notify
+ */
+struct nlm_args {
+ struct nlm_cookie cookie;
+ struct nlm_lock lock;
+ u32 block;
+ u32 reclaim;
+ u32 state;
+ u32 monitor;
+ u32 fsm_access;
+ u32 fsm_mode;
+};
+
+typedef struct nlm_args nlm_args;
+
+/*
+ * Generic lockd result
+ */
+struct nlm_res {
+ struct nlm_cookie cookie;
+ __be32 status;
+ struct nlm_lock lock;
+};
+
+/*
+ * statd callback when client has rebooted
+ */
+struct nlm_reboot {
+ char *mon;
+ unsigned int len;
+ u32 state;
+ struct nsm_private priv;
+};
+
+/*
+ * Contents of statd callback when monitored host rebooted
+ */
+#define NLMSVC_XDRSIZE sizeof(struct nlm_args)
+
+int nlmsvc_decode_testargs(struct svc_rqst *, __be32 *);
+int nlmsvc_encode_testres(struct svc_rqst *, __be32 *);
+int nlmsvc_decode_lockargs(struct svc_rqst *, __be32 *);
+int nlmsvc_decode_cancargs(struct svc_rqst *, __be32 *);
+int nlmsvc_decode_unlockargs(struct svc_rqst *, __be32 *);
+int nlmsvc_encode_res(struct svc_rqst *, __be32 *);
+int nlmsvc_decode_res(struct svc_rqst *, __be32 *);
+int nlmsvc_encode_void(struct svc_rqst *, __be32 *);
+int nlmsvc_decode_void(struct svc_rqst *, __be32 *);
+int nlmsvc_decode_shareargs(struct svc_rqst *, __be32 *);
+int nlmsvc_encode_shareres(struct svc_rqst *, __be32 *);
+int nlmsvc_decode_notify(struct svc_rqst *, __be32 *);
+int nlmsvc_decode_reboot(struct svc_rqst *, __be32 *);
+/*
+int nlmclt_encode_testargs(struct rpc_rqst *, u32 *, struct nlm_args *);
+int nlmclt_encode_lockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
+int nlmclt_encode_cancargs(struct rpc_rqst *, u32 *, struct nlm_args *);
+int nlmclt_encode_unlockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
+ */
+
+#endif /* LOCKD_XDR_H */