mac80211: tx: do not drop non-robust mgmt to non-MFP stas.
When drop_unencrypted is enabled and MFP is disabled,
non-robust management frames for not-yet associated STA are dropped.
This isn't visible as many management frames sent from the kernel
have TX_INTFL_DONT_ENCRYPT set and management frames injected
from a monitor vif have TX_CTL_INJECTED so aren't dropped.
But management frames sent from userspace via NL80211_CMD_FRAME
do not have this flag set, so are dropped.
This patch make it always accept non-robust management frames.
Signed-off-by: Nicolas Cavallari <cavallar@lri.fr>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index a79fd86..b755e77 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -552,6 +552,9 @@
!(ieee80211_is_action(hdr->frame_control) &&
tx->sta && test_sta_flag(tx->sta, WLAN_STA_MFP)))
tx->key = NULL;
+ else if (ieee80211_is_mgmt(hdr->frame_control) &&
+ !ieee80211_is_robust_mgmt_frame(hdr))
+ tx->key = NULL;
else {
I802_DEBUG_INC(tx->local->tx_handlers_drop_unencrypted);
return TX_DROP;