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SUNRPC: Move definition of XDR_UNIT

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Clean up: The unit of XDR alignment is defined by RFC 4506,
not as part of the RPC message header. Thus it belongs in
include/linux/sunrpc/xdr.h.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2020-11-27 17:37:02 -05:00
parent 89ff87494c
commit 81d2174743
2 changed files with 10 additions and 6 deletions
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3
include/linux/sunrpc/msg_prot.h
View File

@ -10,9 +10,6 @@
#define RPC_VERSION 2
/* size of an XDR encoding unit in bytes, i.e. 32bit */
#define XDR_UNIT (4)
/* spec defines authentication flavor as an unsigned 32 bit integer */
typedef u32 rpc_authflavor_t;

13
include/linux/sunrpc/xdr.h
View File

@ -19,6 +19,13 @@
struct bio_vec;
struct rpc_rqst;
/*
* Size of an XDR encoding unit in bytes, i.e. 32 bits,
* as defined in Section 3 of RFC 4506. All encoded
* XDR data items are aligned on a boundary of 32 bits.
*/
#define XDR_UNIT sizeof(__be32)
/*
* Buffer adjustment
*/
@ -330,7 +337,7 @@ ssize_t xdr_stream_decode_string_dup(struct xdr_stream *xdr, char **str,
static inline size_t
xdr_align_size(size_t n)
{
const size_t mask = sizeof(__u32) - 1;
const size_t mask = XDR_UNIT - 1;
return (n + mask) & ~mask;
}
@ -360,7 +367,7 @@ static inline size_t xdr_pad_size(size_t n)
*/
static inline ssize_t xdr_stream_encode_item_present(struct xdr_stream *xdr)
{
const size_t len = sizeof(__be32);
const size_t len = XDR_UNIT;
__be32 *p = xdr_reserve_space(xdr, len);
if (unlikely(!p))
@ -379,7 +386,7 @@ static inline ssize_t xdr_stream_encode_item_present(struct xdr_stream *xdr)
*/
static inline int xdr_stream_encode_item_absent(struct xdr_stream *xdr)
{
const size_t len = sizeof(__be32);
const size_t len = XDR_UNIT;
__be32 *p = xdr_reserve_space(xdr, len);
if (unlikely(!p))