ieee80211_get_vht_max_nss(9)

💅 ieee80211_get_vht_max_nss 💅

okay so bestie, this is a page from the Kernel API Manual — yes, the kernel, we're being serious and iconic today — and it's all about ieee80211_get_vht_max_nss. Bookmark it, screenshot it, send it to the group chat. 🫶

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✨ NAME ✨

ieee80211_get_vht_max_nss — returns the max NSS for a given bandwidth/MCS. literally what it says on the tin, no plot twist 💖

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🌸 SYNOPSIS 🌸

int ieee80211_get_vht_max_nss (struct ieee80211_vht_cap *cap , enum
ieee80211_vht_chanwidth bw , int mcs , bool ext_nss_bw_capable ,
unsigned int max_vht_nss );

she takes five arguments and gives you back an int, main character energy fr ✨

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🎀 ARGUMENTS 🎀

• cap — the VHT capabilities of the peer. like, their whole résumé. 💅
• bw — the bandwidth to use. pick your width, babe.
• mcs — the MCS index to use. the vibes index, if you will.
• ext_nss_bw_capable — this one's a bool, and it indicates whether or not the local transmitter (rate scaling algorithm) can deal with the new logic — that's dot11VHTExtendedNSSBWCapable if you're keeping track at home. basically: are we built for this or not 😭
• max_vht_nss — the current maximum NSS as advertised by the STA in operating mode notification. and here's the cute part: it can be 0, in which case the capability data will be used to derive this (from MCS support). zero means "figure it out bestie" 🫶

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⭐ RETURN ⭐

The maximum NSS that can be used for the given bandwidth/MCS combination. that's it, that's the answer, periodt 💅✨

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🦋 DESCRIPTION 🦋

okay so here's the lore 😌 due to the VHT Extended NSS Bandwidth Support, the maximum NSS can vary for a given BW/MCS — she's not a fixed number, she's dynamic. This function parses the data. that's the whole job. no cap.

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🔥 NOTE 🔥

big one: this function is exported by cfg80211. 👑

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🌈 SEE ALSO 🌈

• Kernel file ./include/linux/ieee80211-vht.h enum
• ieee80211_vht_opmode_bits(9)
• struct ieee80211_vht_mcs_info(9)
• enum ieee80211_vht_mcs_support(9)
• struct ieee80211_vht_cap(9)
• enum ieee80211_vht_chanwidth(9)
• struct ieee80211_vht_operation(9)

go read all of them, i'll wait 💜 (iykyk)

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ngl if you're poking at VHT stuff, the whole squad above is required reading. no skipping 🫶

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and that's the page, bestie!! 🌸 signed off from ./include/linux, dated October 2026, brought to you by the Kernel API Manual — slay, mwah 💖💅✨