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| author |   Chuck Lever <chuck.lever@oracle.com> | 2020-03-02 15:01:08 -0500 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2020-03-16 12:04:31 -0400 |
| commit | 96f194b715b61b11f0184c776a1283df8e152033 (patch) | |
| tree | e5949219bda4aa34a9e52972b17dd41d02ecd5dc /include/linux/sunrpc | |
| parent | svcrdma: Fix double svc_rdma_send_ctxt_put() in an error path (diff) | |
| download | linux-dev-96f194b715b61b11f0184c776a1283df8e152033.tar.xz linux-dev-96f194b715b61b11f0184c776a1283df8e152033.zip | |
SUNRPC: Add xdr_pad_size() helper
Introduce a helper function to compute the XDR pad size of a
variable-length XDR object.
Clean up: Replace open-coded calculation of XDR pad sizes.
I'm sure I haven't found every instance of this calculation.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'include/linux/sunrpc')
| -rw-r--r-- | include/linux/sunrpc/xdr.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h index b41f34977995..83cd9f15c526 100644 --- a/include/linux/sunrpc/xdr.h +++ b/include/linux/sunrpc/xdr.h @@ -301,6 +301,21 @@ xdr_align_size(size_t n) } /** + * xdr_pad_size - Calculate size of an object's pad + * @n: Size of an object being XDR encoded (in bytes) + * + * This implementation avoids the need for conditional + * branches or modulo division. + * + * Return value: + * Size (in bytes) of the needed XDR pad + */ +static inline size_t xdr_pad_size(size_t n) +{ + return xdr_align_size(n) - n; +} + +/** * xdr_stream_encode_u32 - Encode a 32-bit integer * @xdr: pointer to xdr_stream * @n: integer to encode |