net80211: sta: RUN to INIT is a DEAUTH not a DISASSOC
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Authored by bz on Mar 4 2026, 8:18 AM.

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Summary

When taking a node down from RUN to INIT (the latter being the important
part) we are going back to State 1 (cf. 802.11-2024, Figure 11-23) and
that is a DEUATH and not a DISASSOC change (like ASSOC to INIT).
Correct the management type frame we are sending and reason.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days

Test Plan

Is there any reason why we did send a disassoc in this case forever?
I saw it elsewhere too in a Linux based product which made me wonder.
Even the simple diagram in 802.11-2007 (Figure 11-6) seems to have
it as deauth.

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rG FreeBSD src repository

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Buildable 71171
Build 68054: arc lint + arc unit

Event Timeline

bz created this revision.Mar 4 2026, 8:18 AM

Herald added subscribers: glebius, melifaro, imp. · View Herald TranscriptMar 4 2026, 8:18 AM

bz requested review of this revision.Mar 4 2026, 8:18 AM

Harbormaster completed remote builds in B71171: Diff 173098.Mar 4 2026, 8:19 AM

oh good question, lemme go do some digging. It's likely worth seeing what linux is doing and some of the older wifi stacks that are floating about.

(ie what they send, and what they do when they receive DEAUTH vs DISASSOC)

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sys/

net80211/

ieee80211_sta.c

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Diff 173098

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sys/net80211/ieee80211_sta.c

net80211: sta: RUN to INIT is a DEAUTH not a DISASSOCNeeds ReviewPublicActions