can_bitstuffing_len(9)

can_bitstuffing_len 💅✨

okay so bestie, this is can_bitstuffing_len from the Kernel API Manual, and it is lowkey iconic for one very specific job: Calculate the maximum length with bitstuffing. no cap, that’s the whole vibe.

🌸 NAME 🌸

can_bitstuffing_len — Calculate the maximum length with bitstuffing.

🎀 SYNOPSIS 🎀

can_bitstuffing_len (destuffed_len );

✨ ARGUMENTS ✨

• destuffed_len — the length of a destuffed bit stream. that’s the input, bestie 🫶

💜 DESCRIPTION 💜

The worst bit stuffing case is a sequence in which dominant and recessive bits alternate every four bits:

Destuffed: 1 1111  0000  1111  0000  1111 Stuffed:   1 1111o 0000i 1111o
0000i 1111o

Nomenclature 🧚

• "0" — dominant bit
• "o" — dominant stuff bit
• "1" — recessive bit
• "i" — recessive stuff bit

Aside from the first bit, one stuff bit is added every four bits. periodt 💅

🔥 RETURN 🔥

it gives you the length of the stuffed bit stream in the worst case scenario. that’s the return value, bestie — worst-case energy only 💀✨

🌈 SEE ALSO 🌈

• Kernel file ./include/linux/can/length.h
• can_frame_bits(9)

go look at these if you want more can lore, iykyk 🦋

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mwah 💖 this page comes from ./include/linux/can and is dated October 2026 — bye bestie 🫶✨