txgbe_atr_co...perfect_hash(9)

✨ NAME ✨

okay bestie, welcome to the txgbe_atr_co...perfect_hash(9) page from the Kernel API Manual 💖 this one is literally the txgbe_atr_compute_perfect_hash function, and its whole job is computing the perfect filter hash. slay.

🎀 SYNOPSIS 🎀

void txgbe_atr_compute_perfect_hash (union txgbe_atr_input *input ,
       union txgbe_atr_input *input_mask );

💅 ARGUMENTS 💅

• input — the input bitstream to compute the hash on ✨
• input_mask — the mask for the input bitstream 🎀

🦋 DESCRIPTION 🦋

okay so this function is giving two main purposes, fr fr.

1. It applies the input_mask to the atr_input, which results in a cleaned up atr_input data stream 💅
2. It computes the hash and stores it in the bkt_hash field at the end of the input byte stream. This way it will be available for future use without needing to recompute the hash 👑

like, it's literally setting future-you up so you don't have to redo the hash math. iconic behaviour.

🌈 SEE ALSO 🌈

peep the kernel file here: ./drivers/net/ethernet/wangxun/txgbe/txgbe_fdir.c 🦋

also check out these besties:

• txgbe_atr_compute_sig_hash(9)
• txgbe_fdir_add_signature_filter(9)
• txgbe_fdir_enable(9)
• txgbe_init_fdir_signature(9)
• txgbe_init_fdir_perfect(9)

mwah 💋 source/version: ./drivers/net/ethernet/wangxun...; date: October 2026; page: txgbe_atr_co...perfect_hash(9). no cap, that's the whole vibe 💖