hash_mac_addr(9)

🦋 hash_mac_addr(9) — Kernel API Manual, but make it main character 🦋

okay bestie, welcome to the little kernel function that hashes a MAC address. this is hash_mac_addr(9), straight outta the Kernel API Manual, and we're gonna understand it together. no cap. 💖

🌸 NAME 🌸

hash_mac_addr — return the hash value of a MAC address. that's it, that's the whole name, and it ate. ✨

✨ SYNOPSIS ✨

int hash_mac_addr (const u8 *addr );

yep, it's an int-returning function, and that const u8 *addr is the pointer situation. copy it exactly, bestie — character for character. 💅

🫶 ARGUMENTS 🫶

• addr — the 48-bit Ethernet MAC address. that's the MAC address getting hashed, and yes, it's specifically 48-bit. 🍓

💅 DESCRIPTION 💅

okay so here's the tea: hash_mac_addr() does its hashing on a MAC address with the hash function that hardware inexact (hash) address matching uses. highkey that's the exact behavior — it's not doing some random little dance, it's using the hash function tied to hardware inexact (hash) address matching. it's giving "MAC address in, hash value out," and the vibe check passes. 💯

no extra lore, no secret sauce: that's the described job. periodt. 🎀

👀 SEE ALSO 👀

• kernel file ./drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h — go peek, iykyk 👑

later, bestie! this page is hash_mac_addr(9) from the Kernel API Manual, dated October 2026, and the footer's source path is ./drivers/net/ethernet/chelsio... — mwah, slay, bye 💋💖