ath9k_hw: handle rx key miss

commit 3ae74c33c4f799f6bf6d67240a94a0814a8f1944 upstream.

If AR_KeyMiss is set in the rx descriptor and AR_RxFrameOK is unset,
the hardware could not locate a valid key during a decryption attempt.

In this case, the frame must not be reported as decrypted, otherwise
mac80211 sees only random garbage.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
index 5b995bee70ae4a931e6337c6723618edef4df725..1a0ab706a18f1587b9bcb469511d6a66aa660709 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -616,7 +616,8 @@ int ath9k_hw_process_rxdesc_edma(struct ath_hw *ah, struct ath_rx_status *rxs,
                        rxs->rs_status |= ATH9K_RXERR_DECRYPT;
                } else if (rxsp->status11 & AR_MichaelErr) {
                        rxs->rs_status |= ATH9K_RXERR_MIC;
-               }
+               } else if (rxsp->status11 & AR_KeyMiss)
+                       rxs->rs_status |= ATH9K_RXERR_DECRYPT;
        }
 
        return 0;

diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c
index e955bb9d98cbe0380ef5d070005b373c1a132b8d..79302b1e09105cee17ce48582c1e4cddf33379b1 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/mac.c
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -713,6 +713,8 @@ int ath9k_hw_rxprocdesc(struct ath_hw *ah, struct ath_desc *ds,
                        rs->rs_status |= ATH9K_RXERR_DECRYPT;
                else if (ads.ds_rxstatus8 & AR_MichaelErr)
                        rs->rs_status |= ATH9K_RXERR_MIC;
+               else if (ads.ds_rxstatus8 & AR_KeyMiss)
+                       rs->rs_status |= ATH9K_RXERR_DECRYPT;
        }
 
        return 0;