ENUM IEEE80211_CHANCTX_CHANGE(9)

📦 version 7.3.1, in nixpkgs unstable

💅 enum ieee80211_chanctx_change(9) 💅

okay bestie, so this is a page from the Kernel API Manual and it's all about enum ieee80211_chanctx_change — the little flag enum that tells you what changed on a channel context. it's giving "tiny enum, big responsibilities" and honestly? iconic. ✨

🌸 NAME 🌸

enum ieee80211_chanctx_change — change flag for channel context 💖

🦋 SYNOPSIS 🦋

enum ieee80211_chanctx_change {
    IEEE80211_CHANCTX_CHANGE_WIDTH ,
    IEEE80211_CHANCTX_CHANGE_RX_CHAINS ,
    IEEE80211_CHANCTX_CHANGE_RADAR ,
    IEEE80211_CHANCTX_CHANGE_CHANNEL ,
    IEEE80211_CHANCTX_CHANGE_MIN_DEF ,
    IEEE80211_CHANCTX_CHANGE_AP ,
    IEEE80211_CHANCTX_CHANGE_PUNCTURING ,
    IEEE80211_CHANCTX_CHANGE_NPCA ,
    IEEE80211_CHANCTX_CHANGE_NPCA_PUNCT

};

like, look at her. nine constants. all of them little "hey bestie something moved" notes. 🎀

💜 CONSTANTS 💜

okay so here's the whole squad, one by one, no gatekeeping:

  • IEEE80211_CHANCTX_CHANGE_WIDTH — the channel width changed. she got wider, she got narrower, either way she's different now 💫
  • IEEE80211_CHANCTX_CHANGE_RX_CHAINS — the number of RX chains changed. more chains, fewer chains, the count is just not the same anymore 🔗
  • IEEE80211_CHANCTX_CHANGE_RADAR — the radar detection flag changed. yes, that radar flag. 👀
  • IEEE80211_CHANCTX_CHANGE_CHANNEL — switched to another operating channel. important caveat bestie: this is used only with channel switching with CSA. only then. no cap. 📡
  • IEEE80211_CHANCTX_CHANGE_MIN_DEF — the min chandef changed 🌸
  • IEEE80211_CHANCTX_CHANGE_AP — the AP channel definition changed, so the (wider bandwidth) OFDMA settings need to be changed. so like, the chandef moved and now the OFDMA settings gotta be updated to match — she doesn't get to stay the same 🫶
  • IEEE80211_CHANCTX_CHANGE_PUNCTURING — the punctured channel(s) bitmap was changed. note the period at the end of that description, we're keeping it, that's her punctuation 💅
  • IEEE80211_CHANCTX_CHANGE_NPCA — NPCA configuration changed ✅
  • IEEE80211_CHANCTX_CHANGE_NPCA_PUNCT — NPCA puncturing changed ✅

🌈 SEE ALSO 🌈

okay this is the part where the page absolutely ate — the cross-reference list is genuinely enormous and we are keeping every single one, in order, periodt. 🍓

like… 274 refs?? she said "link everything, i'm not doing homework twice." 🔥👑

heads up bestie: the IEEE80211_CHANCTX_CHANGE_CHANNEL note is a real constraint, not a vibe — it's used only with channel switching with CSA. don't go applying it to other stuff, fr fr. 🙈

🎀 the cute sign-off 🎀

this iconic little page lives in ./include/net, and it's dated October 2026 — yes, the future, she's ahead of her time, main character energy only. 🦋✨

now go forth and check your change flags correctly. slay. 💅💖

📦 where this page comes from