ieee80211_s1g_has_next_tbtt(9)

✨ ieee80211_s1g_has_next_tbtt ✨

okay bestie, welcome to the ieee80211_s1g_has_next_tbtt page from the Kernel API Manual 🎀 this one is a tiny little helper, but it's lowkey iconic for what it does: it peeks at a frame control field and tells you if the next TBTT field is chillin' in there. no cap.

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🌸 NAME 🌸

ieee80211_s1g_has_next_tbtt — check if IEEE80211_S1G_BCN_NEXT_TBTT 💅

like, literally, that's the whole job. it's giving "vibe check for a beacon bit."

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🦋 SYNOPSIS 🦋

bool ieee80211_s1g_has_next_tbtt(__le16 fc);

one function, one argument, returns a bool. simple. clean. ate. 🔥

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💖 ARGUMENTS 💖

• fc — frame control bytes in little-endian byteorder 🧚 yes bestie, little-endian, don't come at me with big-endian bytes, the function will not be having it.

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⭐ RETURN ⭐

returns whether or not the frame contains the variable-length next TBTT field 👑

so like: true = the next TBTT field is in there, false = it's not. that's the tea. 🍓

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🎀 SEE ALSO 🎀

kernel file ./include/linux/ieee80211-s1g.h — that's where the magic lives, go read it iykyk 📖💜

and the whole friend group of related functions/types:

• ieee80211_is_s1g_beacon(9)
• ieee80211_s1g_has_ano(9)
• ieee80211_s1g_has_cssid(9)
• enum ieee80211_s1g_chanwidth(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)

they're all besties, go say hi 🫶✨

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ok real talk, it's a one-liner check on __le16 fc and nothing else. no hidden behaviour, no side quests. keep your byteorder right and you're golden 🏆

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that's the whole page, bestie, short and sweet like a good commit message 😭💖 sourced from ./include/linux and dated October 2026 — mwah, go forth and parse those S1G beacons, you're gonna slay 🌈👑💅