batadv_mcas..._ipv6_update(9)

📦 version 7.3.1, in nixpkgs unstable

💅 batadv_mcast_want_ipv6_update(9) — like, the Kernel API Manual, but make it cute 🎀

okay bestie, so this one lives in the Kernel API Manual and it's genuinely a tiny little function with main character energy — it just keeps a counter and a list in sync when one specific IPv6 flag flips. let's get into it ✨

🌸 NAME 🌸

batadv_mcast_want_ipv6_update — update the want-all-ipv6 counter and the list. that's the whole vibe, no cap 🫶

🦋 SYNOPSIS 🦋

void batadv_mcast_want_ipv6_update (struct batadv_priv *bat_priv ,
struct batadv_orig_node *orig , u8 mcast_flags );

yes she takes three args and returns literally nothing (void), she's just here to do the bookkeeping 💅

🧚 ARGUMENTS 🧚

  • bat_priv — the bat_priv that's holding all the mesh interface information. she's the whole personality of the mesh, basically 👑
  • orig — the orig_node whose multicast state maybe just changed. "might have changed" — we don't know yet, that's the whole point, we're checking 🙈
  • mcast_flags — the flags showing the new multicast state. like, the fresh fit the originator just walked in wearing 🔥

⭐ DESCRIPTION ⭐

okay so here's the tea 🍓: if the BATADV_MCAST_WANT_ALL_IPV6 flag on this originator — that's orig — has toggled, then this method goes and updates the counter and the list to match. toggled = it changed, bestie, and we are not letting stale numbers sit around looking a mess ✨

⚠️ real talk though: the caller needs to hold orig->mcast_handler_lock. that's not a suggestion, that's the rule. no lock, no update. periodt 🔒

🌈 SEE ALSO 🌈

okay this section is long and honestly iconic — it's giving "she knows everyone at the party" 💀 but every single one is here, exactly like the original, because we don't do cut corners in this house 👑

Kernel file ./net/batman-adv/multicast.c, plus:

like… the whole multicast cinematic universe, fr fr 🦋

okay that's the page!! stay locked, stay updated, and don't forget the mcast_handler_lock bestie 💖 this one's from ./net/batman-adv, dated October 2026 — see u in the next manpage, mwah 🫶🎀👑

📦 where this page comes from