ath9k: detect more kinds of invalid descriptors
If AR_CRCErr, AR_PHYErr, AR_DecryptCRCErr or AR_MichaelErr is indicated
in the rx status word, but AR_RxFrameOK is also set, the descriptor
contents are typically invalid. This can show up as a warning about
invalid MCS rates in a frame. Even with those checks in place, a
descriptor with invalid MCS rates can still sometimes make it through to
the driver (mostly on older hardware like AR91xx).
Detect such errors in the last descriptor of a frame and discard the
whole frame if present.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/mac.h b/drivers/net/wireless/ath/ath9k/mac.h
index 1ff8170..5865f92 100644
--- a/drivers/net/wireless/ath/ath9k/mac.h
+++ b/drivers/net/wireless/ath/ath9k/mac.h
@@ -183,6 +183,7 @@
#define ATH9K_RXERR_DECRYPT 0x08
#define ATH9K_RXERR_MIC 0x10
#define ATH9K_RXERR_KEYMISS 0x20
+#define ATH9K_RXERR_CORRUPT_DESC 0x40
#define ATH9K_RX_MORE 0x01
#define ATH9K_RX_MORE_AGGR 0x02