ieee80211_i...texts_atomic(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ieee80211_iter_chan_contexts_atomic ✨

Okay so bestie, welcome to the Kernel API Manual — yes that Kernel API Manual — and today's main character is ieee80211_iter_chan_contexts_atomic. It's giving "small function, huge responsibilities" and honestly? We're obsessed. No cap. 🎀

✨ NAME ✨

ieee80211_iter_chan_contexts_atomic — the one that iterates channel contexts 🦋

🌸 SYNOPSIS 🌸

void ieee80211_iter_chan_contexts_atomic (struct ieee80211_hw *hw , void
(*iter)(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf
*chanctx_conf, void *data) , void *iter_data );

🎀 ARGUMENTS 🎀

  • hw — a pointer you got from ieee80211_alloc_hw. That's the plug, that's where it all comes from, don't lose it 🔌
  • iter — the iterator function. Your little callback bestie that gets called for each thing 🫶
  • iter_data — whatever data you pass in, which then gets handed straight to the iterator function. Like passing snacks through the group chat 🍓

🦋 DESCRIPTION 🦋

So what it does is iterate all active channel contexts. That's the whole vibe. ✨

It's atomic, which is the important part — it doesn't acquire any locks internally that might be held in other places while it's calling into the driver. So you can just... call it. No lock drama. periodt. 💅

Two little rules of the road, and they matter:

  • The iterator will not find a context that's being added — i.e. during the driver callback to add it. Not there yet, ghost. 👻
  • But it will find it while it's being removed. So removals are visible mid-flight, lowkey spooky but that's how it is.
⭐ Heads up: during hardware restart, all contexts that existed before the restart are considered already present. So they'll be found while iterating — whether they've been re-added already or not. Yes, even the ones that are only "present" in the spiritual sense 😭

🔥 SEE ALSO 🔥

This list? Iconic. Massive. Basically the whole mac80211 cinematic universe, and we're listing every single one because bestie, we don't skip. 👑

Like, that's the whole friend group and every single one ate. 🔥

💖 and that's the page!! 💖

Sign-off time bestie 🫶 — this little gem lives out of ./include/net, dated October 2026, and it's filed under the manual name ieee80211_i...texts_atomic(9) (yes the header truncates it like that, we don't make the rules 💀). Now go iterate those channel contexts, atomically, like the main character you are. 👑✨

📦 where this page comes from