byteorder: Add le64_to_cpu_array() and cpu_to_le64_array()

Add le64_to_cpu_array() and cpu_to_le64_array().  These mirror the
corresponding 32-bit functions.

These will be used by the BLAKE2b code.

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20251018043106.375964-6-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

diff --git a/include/linux/byteorder/generic.h b/include/linux/byteorder/generic.h
index b3705e8..55a4419 100644 (file)
--- a/include/linux/byteorder/generic.h
+++ b/include/linux/byteorder/generic.h
@@ -173,6 +173,22 @@ static inline void cpu_to_le32_array(u32 *buf, unsigned int words)
        }
 }
 
+static inline void le64_to_cpu_array(u64 *buf, unsigned int words)
+{
+       while (words--) {
+               __le64_to_cpus(buf);
+               buf++;
+       }
+}
+
+static inline void cpu_to_le64_array(u64 *buf, unsigned int words)
+{
+       while (words--) {
+               __cpu_to_le64s(buf);
+               buf++;
+       }
+}
+
 static inline void memcpy_from_le32(u32 *dst, const __le32 *src, size_t words)
 {
        size_t i;