ENUM IEEE80211_S1G_CHANWIDTH(9)

✨ enum ieee80211_s1g_chanwidth — the kernel API manual, bestie edition ✨

Okay so we're reading enum ieee802...1g_chanwidth(9) today and honestly? It's a little guy with a big job. Buckle up, we're getting into 802.11ah energy 🦋

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💖 NAME 💖

enum ieee80211_s1g_chanwidth — S1G channel widths. These are defined in IEEE802.11-2016ah Table 10-20 as BSS Channel Width. That's the whole vibe. It's a table lookup that got promoted to a kernel enum, and honestly? Deserved. 👑

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🎀 SYNOPSIS 🎀

Here's the shape of it, exactly as it lives in the source — no cap, this is copy-paste sacred:

enum ieee80211_s1g_chanwidth {
    IEEE80211_S1G_CHANWIDTH_1MHZ ,
    IEEE80211_S1G_CHANWIDTH_2MHZ ,
    IEEE80211_S1G_CHANWIDTH_4MHZ ,
    IEEE80211_S1G_CHANWIDTH_8MHZ ,
    IEEE80211_S1G_CHANWIDTH_16MHZ

};

Five constants, all doubling, all iconic. It's giving "powers of two but make it a channel plan." 🌈

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🌸 Constants 🌸

Each one is just... the width of the operating channel. That's it, that's the whole personality. But bestie, let's meet them one by one because they each deserve their moment:

• IEEE80211_S1G_CHANWIDTH_1MHZ — 1MHz operating channel 💅 tiny, precious, lowkey adorable
• IEEE80211_S1G_CHANWIDTH_2MHZ — 2MHz operating channel ✨ double the room, double the slay
• IEEE80211_S1G_CHANWIDTH_4MHZ — 4MHz operating channel 🦋 we're growinggg
• IEEE80211_S1G_CHANWIDTH_8MHZ — 8MHz operating channel 🔥 now we're actually wide
• IEEE80211_S1G_CHANWIDTH_16MHZ — 16MHz operating channel 👑 the main character of the enum, fr fr

Ngl, the pattern is so satisfying. 1, 2, 4, 8, 16. She ate and left no crumbs. 🍓

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🫶 SEE ALSO 🫶

Kernel file: ./include/linux/ieee80211-s1g.h — that's where all these live, go say hi to them 🧚

And the whole S1G friend group, because these functions literally cannot be normal about each other:

• ieee80211_is_s1g_beacon(9)
• ieee80211_s1g_has_next_tbtt(9)
• ieee80211_s1g_has_ano(9)
• ieee80211_s1g_has_cssid(9)
• enum ieee80211_s1g_pri_chanwidth(9)
• struct ieee80211_s1g_bcn_compat_ie(9)
• struct ieee80211_s1g_oper_ie(9)
• struct ieee80211_aid_response_ie(9)
• ieee80211_s1g_optional_len(9)
• ieee80211_is_s1g_short_beacon(9)

That's ten links, bestie. TEN. The group chat is popping off. 📱💀

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Okay that's the whole page!! Sourced from that ./include/linux directory, dated October 2026, and filed under enum ieee802...1g_chanwidth(9) in case you ever need to find it again. Byeeee, go read some headers, ily 🥰💜⭐