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ath9k: fix a regression in handling of MAC key miss events (should improve connection stability) 

SVN-Revision: 28250
owl
Felix Fietkau 2011-09-17 08:34:37 +00:00
parent fca8f05757
commit 0e9e83047d
1 changed files with 83 additions and 0 deletions
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83
package/mac80211/patches/551-ath9k_fix_keymiss_handling.patch Normal file
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@ -0,0 +1,83 @@
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -525,8 +525,8 @@ int ath9k_hw_process_rxdesc_edma(struct
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;
+ if (rxsp->status11 & AR_KeyMiss)
+ rxs->rs_status |= ATH9K_RXERR_KEYMISS;
}
return 0;
--- a/drivers/net/wireless/ath/ath9k/mac.c
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -620,8 +620,8 @@ int ath9k_hw_rxprocdesc(struct ath_hw *a
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;
+ if (ads.ds_rxstatus8 & AR_KeyMiss)
+ rs->rs_status |= ATH9K_RXERR_KEYMISS;
}
return 0;
--- a/drivers/net/wireless/ath/ath9k/mac.h
+++ b/drivers/net/wireless/ath/ath9k/mac.h
@@ -181,6 +181,7 @@ struct ath_htc_rx_status {
#define ATH9K_RXERR_FIFO 0x04
#define ATH9K_RXERR_DECRYPT 0x08
#define ATH9K_RXERR_MIC 0x10
+#define ATH9K_RXERR_KEYMISS 0x20
#define ATH9K_RX_MORE 0x01
#define ATH9K_RX_MORE_AGGR 0x02
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -854,6 +854,8 @@ static bool ath9k_rx_accept(struct ath_c
* descriptors.
*/
if (rx_stats->rs_status != 0) {
+ u8 status_mask;
+
if (rx_stats->rs_status & ATH9K_RXERR_CRC) {
rxs->flag |= RX_FLAG_FAILED_FCS_CRC;
mic_error = false;
@@ -861,7 +863,8 @@ static bool ath9k_rx_accept(struct ath_c
if (rx_stats->rs_status & ATH9K_RXERR_PHY)
return false;
- if (rx_stats->rs_status & ATH9K_RXERR_DECRYPT) {
+ if ((rx_stats->rs_status & ATH9K_RXERR_DECRYPT) ||
+ (!is_mc && (rx_stats->rs_status & ATH9K_RXERR_KEYMISS))) {
*decrypt_error = true;
mic_error = false;
}
@@ -871,17 +874,14 @@ static bool ath9k_rx_accept(struct ath_c
* decryption and MIC failures. For monitor mode,
* we also ignore the CRC error.
*/
- if (ah->is_monitoring) {
- if (rx_stats->rs_status &
- ~(ATH9K_RXERR_DECRYPT | ATH9K_RXERR_MIC |
- ATH9K_RXERR_CRC))
- return false;
- } else {
- if (rx_stats->rs_status &
- ~(ATH9K_RXERR_DECRYPT | ATH9K_RXERR_MIC)) {
- return false;
- }
- }
+ status_mask = ATH9K_RXERR_DECRYPT | ATH9K_RXERR_MIC |
+ ATH9K_RXERR_KEYMISS;
+
+ if (ah->is_monitoring)
+ status_mask |= ATH9K_RXERR_CRC;
+
+ if (rx_stats->rs_status & ~status_mask)
+ return false;
}
/*