diff mbox

[PATCHv3,2/2] mac80211: tx: do not drop non-robust mgmt to non-MFP stas.

Message ID 1341418208-28663-2-git-send-email-cavallar@lri.fr (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Nicolas Cavallari July 4, 2012, 4:10 p.m. UTC
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>

---
changes :
v2->v3 : now depends on johannes's cleanup, even clearer code.
v1->v2 : thinier, clearer, more correct code.  migrated from RFC to PATCH.
---
 net/mac80211/tx.c |    3 +++
 1 file changed, 3 insertions(+)
diff mbox

Patch

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index cdd4ac6..691aa6c 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -552,6 +552,9 @@  ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
 		 !(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;