diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sunrpc/xdrgen/_builtins.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/include/linux/sunrpc/xdrgen/_builtins.h b/include/linux/sunrpc/xdrgen/_builtins.h index 66ca3ece951a..52ed9a9151c4 100644 --- a/include/linux/sunrpc/xdrgen/_builtins.h +++ b/include/linux/sunrpc/xdrgen/_builtins.h @@ -46,6 +46,66 @@ xdrgen_encode_bool(struct xdr_stream *xdr, bool val) return true; } +/* + * De facto (non-standard but commonly implemented) signed short type: + * - Wire sends sign-extended 32-bit value (e.g., 0xFFFFFFFF) + * - be32_to_cpup() returns u32 (0xFFFFFFFF) + * - Explicit (s16) cast truncates to 16 bits (0xFFFF = -1) + */ +static inline bool +xdrgen_decode_short(struct xdr_stream *xdr, s16 *ptr) +{ + __be32 *p = xdr_inline_decode(xdr, XDR_UNIT); + + if (unlikely(!p)) + return false; + *ptr = (s16)be32_to_cpup(p); + return true; +} + +/* + * De facto (non-standard but commonly implemented) signed short type: + * - C integer promotion sign-extends s16 val to int before passing to + * cpu_to_be32() + * - This is well-defined: -1 as s16 -1 as int 0xFFFFFFFF on wire + */ +static inline bool +xdrgen_encode_short(struct xdr_stream *xdr, s16 val) +{ + __be32 *p = xdr_reserve_space(xdr, XDR_UNIT); + + if (unlikely(!p)) + return false; + *p = cpu_to_be32(val); + return true; +} + +/* + * De facto (non-standard but commonly implemented) unsigned short type: + * 16-bit integer zero-extended to fill one XDR_UNIT. + */ +static inline bool +xdrgen_decode_unsigned_short(struct xdr_stream *xdr, u16 *ptr) +{ + __be32 *p = xdr_inline_decode(xdr, XDR_UNIT); + + if (unlikely(!p)) + return false; + *ptr = (u16)be32_to_cpup(p); + return true; +} + +static inline bool +xdrgen_encode_unsigned_short(struct xdr_stream *xdr, u16 val) +{ + __be32 *p = xdr_reserve_space(xdr, XDR_UNIT); + + if (unlikely(!p)) + return false; + *p = cpu_to_be32(val); + return true; +} + static inline bool xdrgen_decode_int(struct xdr_stream *xdr, s32 *ptr) { |