crc64_be(9)

✨ crc64_be(9) ✨

okay so we're deep in the kernel API manual bestie — section 9, the Kernel API Manual zone, and today's main character is crc64_be. buckle up 🎀

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💖 NAME 💖

crc64_be — Calculate bitwise big-endian ECMA-182 CRC64

like literally that's the whole vibe. bitwise. big-endian. ECMA-182. CRC64. slay 🔥

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🌸 SYNOPSIS 🌸

u64 crc64_be (u64 crc , const void *p , size_t len );

that's the signature, no cap 🫶 — copy it exactly, don't be cute with it:

u64 crc64_be (u64 crc , const void *p , size_t len );

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🦋 ARGUMENTS 🦋

• crc — the seed value for the computation, iykyk 🌱. pass 0 or (u64)~0 when you're starting a brand new CRC calculation, or hand over the previous crc64 value if you're computing incrementally (yes, piece by piece, we love a build-up 💅).
• p — pointer to the buffer over which CRC64 is run 📍 — this is the actual data getting the CRC64 treatment.
• len — length of buffer p 📏. don't forget it, bestie, it's kind of important.

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⭐ SEE ALSO ⭐

• Kernel file ./include/linux/crc64.h
• crc64_nvme(9)

go read those too, they're giving essential reading 📚✨

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🫶 friendly reminder: the crc seed is doing a lot of heavy lifting here — 0 or (u64)~0 for a fresh run, previous value for incremental. no guessing, that's exactly what the page says 💜

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and that's the tea, bestie 🍓 — this iconic little page lives in ./include/linux, dated October 2026, and it's filed under crc64_be(9). periodt. 👑🌈💅