nvmem_get_mac_address(9)

💖 nvmem_get_mac_address(9) 💖

okay bestie, welcome to the Kernel API Manual entry for nvmem_get_mac_address — yes, the manual name is literally right there, we're doing this properly. This is the little kernel function that goes "hey, can I get the MAC address from that nvmem cell named 'mac-address' that's tied to this device?" and honestly? iconic behavior. 🎀

✨ SYNOPSIS ✨

int nvmem_get_mac_address (struct device *dev , void *addrbuf );

🫶 ARGUMENTS 🫶

• dev — the device that the mac-address cell is associated with. like, this is the device we're asking about. main character device energy. 👑
• addrbuf — the buffer where the MAC address gets copied on success. that's where the good stuff lands. 💅

🌸 DESCRIPTION 🌸

Returns 0 on success or a negative error number on failure. that's it. that's the whole vibe. no cap, no extra lore, just success 0 or a negative error number if it didn't work out. 😭

okay so lowkey this is a tiny function, but it's doing important work — it's the nvmem-to-MAC-address pipeline, and we respect it. periodt. 💜

🦋 SEE ALSO 🦋

Kernel file ./net/ethernet/eth.c and all these besties:

• eth_header(9)
• eth_get_headlen(9)
• eth_type_trans(9)
• eth_header_cache(9)
• eth_header_cache_update(9)
• eth_header_parse_protocol(9)
• eth_prepare_mac_addr_change(9)
• eth_commit_mac_addr_change(9)
• eth_mac_addr(9)
• ether_setup(9)
• alloc_etherdev_mqs(9)
• platform_get_ethdev_address(9)
• fwnode_get_mac_address(9)
• device_get_mac_address(9)
• device_get_ethdev_address(9)

and that's the page, bestie! 🧚 this came from ./net/ethernet and it's dated October 2026 — so yeah, mark your calendar, hydrate, and go get those MAC addresses. 💖✨