STRUCT IEEE80211_VHT_MCS_INFO(9)

💅 struct ieee80211_vht_mcs_info(9) — like, the Kernel API Manual, but make it make sense

okay so bestie, welcome to the struct ieee80211_vht_mcs_info page ✨ this is straight out of the Kernel API Manual and honestly? she's giving very-much-802.11ac-radio-details. sit down, hydrate, let's go 🫶

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🌸 NAME 🌸

struct ieee80211_vht_mcs_info — literally just VHT MCS information 💖 that's it, that's the whole vibe.

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✨ SYNOPSIS ✨

here's the whole struct, no cap, copy it exactly:

struct ieee80211_vht_mcs_info {
    __le16 rx_mcs_map;
    __le16 rx_highest;
    __le16 tx_mcs_map;
    __le16 tx_highest;
 };

four little __le16 fields and she's iconic for it 👑

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🎀 Members 🎀

• rx_mcs_map — the RX MCS map 🦋 it's 2 bits for each stream, and there are 8 streams total — do the math, it adds up, slay.
• rx_highest — this one tells you the highest long GI VHT PPDU data rate the STA can receive 📥 the rate is expressed in units of 1 Mbps. BUT — and this is important, bestie — if this field is 0, do not use this value to figure out the highest RX data rate supported. like, it's a no from her 💀 also the top 3 bits of this field indicate the Maximum NSTS,total (which is a beamformee capability, iykyk).
• tx_mcs_map — the TX MCS map 🌈 same deal as RX: 2 bits for each stream, 8 streams total. periodt.
• tx_highest — the highest long GI VHT PPDU data rate the STA can transmit 📤 rate expressed in units of 1 Mbps. and again: if this field is 0, don't go using it to consider the highest TX data rate supported, okay? 🙈 no thanks. also, the top 2 bits of this field are reserved, and the 3rd bit from the top indicates the VHT Extended NSS BW Capability ⭐

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💜 SEE ALSO 💜

the sources, the friends, the whole crew:

• Kernel file ./include/linux/ieee80211-vht.h enum
• ieee80211_vht_opmode_bits(9)
• enum ieee80211_vht_mcs_support(9)
• struct ieee80211_vht_cap(9)
• enum ieee80211_vht_chanwidth(9)
• struct ieee80211_vht_operation(9)
• ieee80211_get_vht_max_nss(9)

go read all of them, bestie, they're all bangers 🔥

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and that's the page!! mwah 💋 this came from ./include/linux, dated October 2026, and it's filed under struct ieee...vht_mcs_info(9) — go off, kernel docs, you ate 🍓🧚