| Message ID | 20220201190128.3075065-6-kbusch@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | 64-bit data integrity field support | expand |
Keith, > The NVMe protocol extended the data integrity fields with unaligned > 48-bit reference tags. Provide some helper accessors in > preparation for these. Looks good. Needed this a few times in the past. Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
On 2/1/22 20:01, Keith Busch wrote: > The NVMe protocol extended the data integrity fields with unaligned > 48-bit reference tags. Provide some helper accessors in > preparation for these. > > Acked-by: Arnd Bergmann <arnd@arndb.de> > Signed-off-by: Keith Busch <kbusch@kernel.org> > --- > include/asm-generic/unaligned.h | 26 ++++++++++++++++++++++++++ > 1 file changed, 26 insertions(+) > Hehe. Reviewed-by: Hannes Reinecke <hare@suse.de> Cheers, Hannes
diff --git a/include/asm-generic/unaligned.h b/include/asm-generic/unaligned.h index 1c4242416c9f..8fc637379899 100644 --- a/include/asm-generic/unaligned.h +++ b/include/asm-generic/unaligned.h @@ -126,4 +126,30 @@ static inline void put_unaligned_le24(const u32 val, void *p) __put_unaligned_le24(val, p); } +static inline void __put_unaligned_be48(const u64 val, __u8 *p) +{ + *p++ = val >> 40; + *p++ = val >> 32; + *p++ = val >> 24; + *p++ = val >> 16; + *p++ = val >> 8; + *p++ = val; +} + +static inline void put_unaligned_be48(const u64 val, void *p) +{ + __put_unaligned_be48(val, p); +} + +static inline u64 __get_unaligned_be48(const u8 *p) +{ + return (u64)p[0] << 40 | (u64)p[1] << 32 | p[2] << 24 | + p[3] << 16 | p[4] << 8 | p[5]; +} + +static inline u64 get_unaligned_be48(const void *p) +{ + return __get_unaligned_be48(p); +} + #endif /* __ASM_GENERIC_UNALIGNED_H */