lowpan_header_decompress(9)

🦋 lowpan_header_decompress(9) 🦋 — from the Kernel API Manual

🎀 NAME 🎀

lowpan_header_decompress — replace 6LoWPAN header with IPv6 header. Yup, that's the whole vibe: header swap, but make it IPv6 ✨

✨ SYNOPSIS ✨

int lowpan_header_decompress (struct sk_buff *skb , const struct
       net_device *dev , const void *daddr , const void *saddr );

💅 ARGUMENTS 💅

okay bestie, here's the cast:

• skb — the buffer that should be manipulated. That's the one getting the header treatment 💅
• dev — the lowpan net device pointer.
• daddr — destination lladdr of the mac header; the compression methods use it.
• saddr — source lladdr of the mac header; the compression methods use it.

🫶 DESCRIPTION 🫶

This function takes the IPHC 6LoWPAN header that's pointed at by skb->data and skb_network_header, and replaces it with the IPv6 header. Iconic, no cap. 💖

It would be nice if the caller already has the necessary headroom for the IPv6 header plus the greatest Transport layer header — because that lowkey reduces the overhead of reallocating headroom. Think of it as a nice-to-have, not a demand 🎀

🌈 SEE ALSO 🌈

• Kernel file ./include/net/6lowpan.h
• lowpan_fetch_skb(9)
• lowpan_header_compress(9)

go read those too, bestie — iykyk 💜

bye bestie 💕 — source/version: ./include/net; dated October 2026; lowpan_header_decompress(9) out. 🎀