bch_encode(9)

💅 bch_encode(9) — calculate BCH ecc parity of data 💅

okay so bestie, this is bch_encode(9) from the Kernel API Manual, and it is literally here to calculate BCH ecc parity of data. no cap. 🦋

🎀 NAME 🎀

bch_encode — calculate BCH ecc parity of data

✨ SYNOPSIS ✨

void bch_encode (struct bch_control *bch , const uint8_t *data ,
       unsigned int len , uint8_t *ecc );

🌸 ARGUMENTS 🌸

• bch — BCH control structure
• data — data to encode
• len — data length in bytes
• ecc — ecc parity data, must be initialized by caller

💖 DESCRIPTION 💖

okay so the ecc parity array is used both as an input and as an output parameter — that is the whole vibe that allows incremental computations. bestie, it should be of the size indicated by member ecc_bytes of bch, and it should be initialized to 0 before the first call. periodt. 💅

The exact number of computed ecc parity bits is given by member ecc_bits of bch; it may be less than m*t for large values of t. like, do not assume it is always m*t, iykyk.

bestie, the ecc array is the main character here: caller initializes it, and the first call starts from 0. do not skip that part. 🫶

🦋 SEE ALSO 🦋

Kernel file ./lib/bch.c, plus the friend group: bch_decode(9), bch_init(9), bch_free(9). 🌈

mwah 💋 — this page is from ./lib, dated October 2026. periodt. 👑