ath9k: Setup MFP options for CCMP

Configure hardware CCMP for management frame protection and use
software crypto when needed.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath9k/recv.c b/drivers/net/wireless/ath9k/recv.c
index 462e08c3d09d..dbf24be23ccb 100644
--- a/drivers/net/wireless/ath9k/recv.c
+++ b/drivers/net/wireless/ath9k/recv.c
@@ -593,6 +593,12 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush)
                         if (test_bit(keyix, sc->sc_keymap))
                                 rx_status.flag |= RX_FLAG_DECRYPTED;
                 }
+                if (ah->sw_mgmt_crypto &&
+                    (rx_status.flag & RX_FLAG_DECRYPTED) &&
+                    ieee80211_is_mgmt(hdr->frame_control)) {
+                        /* Use software decrypt for management frames. */
+                        rx_status.flag &= ~RX_FLAG_DECRYPTED;
+                }
 
                 /* Send the frame to mac80211 */
                 __ieee80211_rx(sc->hw, skb, &rx_status);