cfg80211_get..._idx_by_chan(9)

📦 version 7.3.1, in nixpkgs unstable

💅 cfg80211_get_radio_idx_by_chan(9) — like, the Kernel API Manual page, bestie 🎀

okay so picture this: you're deep in the Kernel API Manual, section 9, and you land on this little gem. It's giving "short but crucial" and honestly? We love a concise function. ✨

🌸 NAME 🌸

cfg80211_get_radio_idx_by_chan — literally just get the radio index by the channel. That's the whole vibe. No cap. 🦋

✨ SYNOPSIS ✨

int cfg80211_get_radio_idx_by_chan (struct wiphy *wiphy , const struct
       ieee80211_channel *chan );

she takes two args and hands you back an int. iconic behavior tbh 👑

🫶 ARGUMENTS 🫶

  • wiphy — the wiphy, obviously 💁‍♀️ like, the wireless physical device thingy you're asking about
  • chan — the channel for which the supported radio index is required. yes bestie, this specific channel. we're being precise here 🎯

⭐ RETURN ⭐

on success you get the radio index — slay 💖

otherwise? -EINVAL. yep. something was not valid, and the kernel is telling you so with zero further comment 😭 periodt.

okay that's part 1 wrapped — more coming, don't go anywhere 🧚‍♀️

✨ SEE ALSO ✨

okay bestie, this is the part where the page points at literally everyone else in the cfg80211 friend group 💅 no gatekeeping, no “you’ll figure it out” — here’s the full cross-reference roll call, every single one, no skips, no cap. 🫶

okay so the SEE ALSO list is literally a whole friend group — like the biggest group chat in the kernel, and every single one of them is tagged. no skips, no "etc.", here's the full roster: 💅

and that's the whole list, bestie — every single one accounted for, no cap. 🏁

this page lives over in ./include/net, and it's dated October 2026, which is giving futuristic icon behavior honestly 💜 go read the others, drink some water, and remember: cfg80211_get..._idx_by_chan(9) ate and left no crumbs 🌟

📦 where this page comes from