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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Event Timeline

adrian created this revision.Jun 24 2026, 4:18 AM

Herald added subscribers: glebius, melifaro, imp. · View Herald TranscriptJun 24 2026, 4:18 AM

adrian requested review of this revision.Jun 24 2026, 4:18 AM

Harbormaster completed remote builds in B74181: Diff 180496.Jun 24 2026, 4:18 AM

adrian added a parent revision: D57798: net80211: encrypt/decrypt MFP CCMP frames.Jun 24 2026, 4:24 AM

adrian added a reviewer: wireless.

adrian added a project: wireless.

This revision was not accepted when it landed; it landed in state Needs Review.Jul 1 2026, 12:21 AM

Closed by commit rGa2d087b67e14: net80211: fix CCMP/GCMP AAD for MFP frames (authored by adrian). · Explain Why

This revision was automatically updated to reflect the committed changes.

adrian added a commit: rGa2d087b67e14: net80211: fix CCMP/GCMP AAD for MFP frames.

adrian added a child revision: D58098: net80211: update drivers to allocate sequence numbers in the raw path.Wed, Jul 8, 5:56 AM

Revision Contents
Changeset List

Path

Size

sys/

net80211/

ieee80211_crypto.c

9 lines

Diff 181132

sys/net80211/ieee80211_crypto.c

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