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nvmecontrol: Create letoh to generically convert to host order

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Using _Generic, create letoh which will generically convert uintXX_t
types from little endian to host, regardless of the size. This name has
been floated as a possible addition to endian.h.

Sponsored by:		Netflix
Discussed with:		jhb
Reviewed by:		chuck
Differential Revision:	https://reviews.freebsd.org/D44649
This commit is contained in:
Warner Losh 2024-04-16 16:35:33 -06:00
parent de22251127
commit 67163bc485
1 changed files with 11 additions and 0 deletions
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11
sbin/nvmecontrol/nvmecontrol.h
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@ -60,6 +60,17 @@ struct kv_name {
const char *name;
};
/*
* Generically convert little endian to host endian, based on the type of the thing
* being converted. Use the proposed name for future changes to endian.h.
*/
#define letoh(x) \
_Generic(x, \
uint8_t: (x), \
uint16_t: le16toh(x), \
uint32_t: le32toh(x), \
uint64_t: le64toh(x))
const char *kv_lookup(const struct kv_name *kv, size_t kv_count, uint32_t key);
void logpage_register(struct logpage_function *p);