[PATCH v3 2/6] SUNRPC: Introduce xdr_encode_double()

Anna Schumaker
2022-07-15T18:44:42Z

From: Anna Schumaker <Anna.Schumaker@Netapp.com>

This is similar to xdr_encode_word(), but instead lets us encode a
64-bit wide value into the xdr_buf at the given offset.

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
---
include/linux/sunrpc/xdr.h | 1 +
net/sunrpc/xdr.c | 8 ++++++++
2 files changed, 9 insertions(+)

diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index 7dcc6c31fe29..e26047d474b2 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -196,6 +196,7 @@ extern int read_bytes_from_xdr_buf(const struct xdr_buf *, unsigned int, void *,
extern int write_bytes_to_xdr_buf(const struct xdr_buf *, unsigned int, void *, unsigned int);

extern int xdr_encode_word(const struct xdr_buf *, unsigned int, u32);
+extern int xdr_encode_double(const struct xdr_buf *, unsigned int, u64);
extern int xdr_decode_word(const struct xdr_buf *, unsigned int, u32 *);

struct xdr_array2_desc;
diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c
index 8ba11a754297..63d9cdc989da 100644
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -1865,6 +1865,14 @@ int xdr_encode_word(const struct xdr_buf *buf, unsigned int base, u32 obj)
}
EXPORT_SYMBOL_GPL(xdr_encode_word);

+int xdr_encode_double(const struct xdr_buf *buf, unsigned int base, u64 obj)
+{
+ __be64 raw = cpu_to_be64(obj);
+
+ return write_bytes_to_xdr_buf(buf, base, &raw, sizeof(obj));
+}
+EXPORT_SYMBOL_GPL(xdr_encode_double);
+
/* Returns 0 on success, or else a negative error code. */
static int xdr_xcode_array2(const struct xdr_buf *buf, unsigned int base,
struct xdr_array2_desc *desc, int encode)
--
2.37.1