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Differential D57799

net80211: fix CCMP/GCMP AAD for MFP frames
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Authored by adrian on Jun 24 2026, 4:18 AM.
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rGa2d087b67e14: net80211: fix CCMP/GCMP AAD for MFP frames
Summary

Update ieee80211_crypto_init_aad() to do what 802.11-2020 says -
only mask fc[0] bits 4-6 on data frames, not on management frames.
This (with other diffs to actually negotiate MFP and configure
ath(4) for MFP + software keys) allows the CCMP path to decrypt
CCMP MFP frames in the software path.

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rG FreeBSD src repository
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Build 71064: arc lint + arc unit

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sys/
net80211/
9 lines

Diff 180496

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sys/net80211/ieee80211_crypto.c

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