LOWPAN_NHC(9)

💖 NAME 💖

okay so bestie, welcome to the Kernel API Manual page for LOWPAN_NHC(9) — it's the helper macro that generates nh id fields and the lowpan_nhc struct. no cap, it's giving very specific setup energy and we're obsessed. ✨

✨ SYNOPSIS ✨

LOWPAN_NHC (__nhc , _name , _nexthdr , _hdrlen , _id , _idmask ,
       _uncompress , _compress );

lowkey that's the whole shape of it — the macro and its argument lineup, exactly like that. 🎀

🎀 ARGUMENTS 🎀

• __nhc — variable name of the lowpan_nhc struct. that's the variable-name spot, periodt. 💅
• _name — a const char * of the common header compression name. string moment, fr fr. 🌸
• _nexthdr — the ipv6 nexthdr field for the header compression. yep, that field. 🦋
• _hdrlen — the ipv6 nexthdr len for the reserved space. keep it in mind bestie. ⭐
• _id — one byte nhc id value. one byte, exactly. 🍓
• _idmask — one byte nhc id mask value. also one byte, also iconic. 💜
• _uncompress — callback for uncompression call. callback vibes. 🧚
• _compress — callback for compression call. callback vibes again, slay. 🔥

bestie, the parameter order is literally right there in the synopsis — don't freestyle it. 🙈

🦋 SEE ALSO 🦋

• Kernel file ./net/6lowpan/nhc.h
• struct lowpan_nhc(9)
• lowpan_nhc_by_nexthdr(9)
• lowpan_nhc_check_compression(9)
• lowpan_nhc_do_compression(9)
• lowpan_nhc_do_uncompression(9)
• lowpan_nhc_add(9)
• lowpan_nhc_del(9)
• lowpan_nhc_init(9)

mwah 💋 — source/version is ./net/6lowpan, dated October 2026, and this whole page is LOWPAN_NHC(9). bye bestie, go be iconic with your nh id fields 🫶🌈