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wifi: mac80211: drop robust action frames before assoc
author
Johannes Berg
<johannes.berg@intel.com>
Sun, 1 Oct 2023 10:01:09 +0000
(13:01 +0300)
committer
Johannes Berg
<johannes.berg@intel.com>
Mon, 23 Oct 2023 10:56:33 +0000
(12:56 +0200)
To be able to more easily understand the code, drop robust
action frames before being associated, even if there's no
MFP in the end, as they are Class 3 Frames and shouldn't
be transmitted in the first place.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link:
https://lore.kernel.org/r/20231001125722.b2fd37083371.Ie9f4906e2f6c698989bce6681956ed2f9454f27c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
net/mac80211/rx.c
patch
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blob
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diff --git
a/net/mac80211/rx.c
b/net/mac80211/rx.c
index
051db97
..
6f679d2
100644
(file)
--- a/
net/mac80211/rx.c
+++ b/
net/mac80211/rx.c
@@
-2474,6
+2474,15
@@
ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx)
return RX_DROP_U_UNPROT_UNICAST_PUB_ACTION;
}
+ /*
+ * Drop robust action frames before assoc regardless of MFP state,
+ * after assoc we also have decided on MFP or not.
+ */
+ if (ieee80211_is_action(fc) &&
+ ieee80211_is_robust_mgmt_frame(rx->skb) &&
+ (!rx->sta || !test_sta_flag(rx->sta, WLAN_STA_ASSOC)))
+ return RX_DROP_U_UNPROT_ROBUST_ACTION;
+
return RX_CONTINUE;
}