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wifi: mac80211: drop robust action frames before assoc

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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>
This commit is contained in:
Johannes Berg 2023-10-01 13:01:09 +03:00
parent e4e7e3af73
commit f3bd593278
1 changed files with 9 additions and 0 deletions
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9
net/mac80211/rx.c
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@ -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;
}