Collect statistics about recived duplicate and STBC packets.
This information should help see if STBC is actually working.
Tested on ar9285; Should work for all chips after ar9280.
Changes:
- v2. test for stbc vield only on ar9280 and later.
reanme rx_gi to rx_short_gi
- v3. use u16 rs_flags instead of two u8
Signed-off-by: Oleksij Rempel <li...@rempel-privat.de>
---
drivers/net/wireless/ath/ath9k/debug.c | 20 +++++++++++++++++++-
drivers/net/wireless/ath/ath9k/debug.h | 4 ++++
drivers/net/wireless/ath/ath9k/mac.c | 6 ++++++
drivers/net/wireless/ath/ath9k/mac.h | 26 +++++++++++++++-----------
4 files changed, 44 insertions(+), 12 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/debug.c
b/drivers/net/wireless/ath/ath9k/debug.c
index e6307b8..3cb2ae9 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -848,7 +848,7 @@ static ssize_t read_file_recv(struct file *file, char
__user *user_buf,
struct ath_softc *sc = file->private_data;
char *buf;
- unsigned int len = 0, size = 1600;
+ unsigned int len = 0, size = 2048;
ssize_t retval = 0;
buf = kzalloc(size, GFP_KERNEL);
@@ -900,6 +900,11 @@ static ssize_t read_file_recv(struct file *file, char
__user *user_buf,
RXS_ERR("RX-Frags", rx_frags);
RXS_ERR("RX-Spectral", rx_spectral);
+ RXS_ERR("RX-ShortGI", rx_short_gi);
+ RXS_ERR("RX-HT40", rx_ht40);
+ RXS_ERR("RX-Duplicate", rx_duplicate);
+ RXS_ERR("RX-STBC", rx_stbc);
+
if (len > size)
len = size;
@@ -939,6 +944,14 @@ void ath_debug_stat_rx(struct ath_softc *sc, struct
ath_rx_status *rs)
if (rs->rs_phyerr < ATH9K_PHYERR_MAX)
RX_PHY_ERR_INC(rs->rs_phyerr);
}
+ if (rs->rs_flags & ATH9K_RX_GI)
+ RX_STAT_INC(rx_short_gi);
+ if (rs->rs_flags & ATH9K_RX_2040)
+ RX_STAT_INC(rx_ht40);
+ if (rs->rs_flags & ATH9K_RX_DUP)
+ RX_STAT_INC(rx_duplicate);
+ if (rs->rs_flags & ATH9K_RX_STBC)
+ RX_STAT_INC(rx_stbc);
#ifdef CONFIG_ATH9K_MAC_DEBUG
spin_lock(&sc->debug.samp_lock);
@@ -1993,6 +2006,11 @@ void ath9k_get_et_stats(struct ieee80211_hw *hw,
AWDATA(data_underrun);
AWDATA(delim_underrun);
+ AWDATA_RX(rx_short_gi);
+ AWDATA_RX(rx_ht40);
+ AWDATA_RX(rx_duplicate);
+ AWDATA_RX(rx_stbc);
+
AWDATA_RX(crc_err);
AWDATA_RX(decrypt_crc_err);
AWDATA_RX(phy_err);
diff --git a/drivers/net/wireless/ath/ath9k/debug.h
b/drivers/net/wireless/ath/ath9k/debug.h
index 794a7ec..639dae9 100644
--- a/drivers/net/wireless/ath/ath9k/debug.h
+++ b/drivers/net/wireless/ath/ath9k/debug.h
@@ -241,6 +241,10 @@ struct ath_rx_stats {
u32 rx_beacons;
u32 rx_frags;
u32 rx_spectral;
+ u32 rx_short_gi;
+ u32 rx_ht40;
+ u32 rx_duplicate;
+ u32 rx_stbc;
};
struct ath_stats {
diff --git a/drivers/net/wireless/ath/ath9k/mac.c
b/drivers/net/wireless/ath/ath9k/mac.c
index 498fee0..853cb09 100644
--- a/drivers/net/wireless/ath/ath9k/mac.c
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -590,6 +590,12 @@ int ath9k_hw_rxprocdesc(struct ath_hw *ah, struct ath_desc
*ds,
(ads.ds_rxstatus3 & AR_GI) ? ATH9K_RX_GI : 0;
rs->rs_flags |=
(ads.ds_rxstatus3 & AR_2040) ? ATH9K_RX_2040 : 0;
+ rs->rs_flags |=
+ (ads.ds_rxstatus3 & AR_RXST_DUP) ? ATH9K_RX_DUP : 0;
+
+ if (AR_SREV_9280_20_OR_LATER(ah))
+ rs->rs_flags |=
+ (ads.ds_rxstatus3 & AR_RXST_STBC) ? ATH9K_RX_STBC : 0;
if (ads.ds_rxstatus8 & AR_PreDelimCRCErr)
rs->rs_flags |= ATH9K_RX_DELIM_CRC_PRE;
diff --git a/drivers/net/wireless/ath/ath9k/mac.h
b/drivers/net/wireless/ath/ath9k/mac.h
index 5865f92..8ea9566 100644
--- a/drivers/net/wireless/ath/ath9k/mac.h
+++ b/drivers/net/wireless/ath/ath9k/mac.h
@@ -142,7 +142,7 @@ struct ath_rx_status {
u8 rs_isaggr;
u8 rs_moreaggr;
u8 rs_num_delims;
- u8 rs_flags;
+ u16 rs_flags;
bool is_mybeacon;
u32 evm0;
u32 evm1;
@@ -185,13 +185,16 @@ struct ath_htc_rx_status {
#define ATH9K_RXERR_KEYMISS 0x20
#define ATH9K_RXERR_CORRUPT_DESC 0x40
-#define ATH9K_RX_MORE 0x01
-#define ATH9K_RX_MORE_AGGR 0x02
-#define ATH9K_RX_GI 0x04
-#define ATH9K_RX_2040 0x08
-#define ATH9K_RX_DELIM_CRC_PRE 0x10
-#define ATH9K_RX_DELIM_CRC_POST 0x20
-#define ATH9K_RX_DECRYPT_BUSY 0x40
+/* rs_flags */
+#define ATH9K_RX_MORE 0x0001
+#define ATH9K_RX_MORE_AGGR 0x0002
+#define ATH9K_RX_GI 0x0004
+#define ATH9K_RX_2040 0x0008
+#define ATH9K_RX_DELIM_CRC_PRE 0x0010
+#define ATH9K_RX_DELIM_CRC_POST 0x0020
+#define ATH9K_RX_DECRYPT_BUSY 0x0040
+#define ATH9K_RX_DUP 0x0080
+#define ATH9K_RX_STBC 0x0100
#define ATH9K_RXKEYIX_INVALID ((u8)-1)
#define ATH9K_TXKEYIX_INVALID ((u8)-1)
@@ -529,11 +532,12 @@ struct ar5416_desc {
#define AR_RcvTimestamp ds_rxstatus2
+/* rxstatus3 */
#define AR_GI 0x00000001
#define AR_2040 0x00000002
-#define AR_Parallel40 0x00000004
-#define AR_Parallel40_S 2
-#define AR_RxStatusRsvd30 0x000000f8
+#define AR_RXST_DUP 0x00000004 /* duplicate packets */
+#define AR_RXST_STBC 0x00000008 /* ar9280 and later */
+#define AR_RxStatusRsvd30 0x000000f0
#define AR_RxAntenna 0xffffff00
#define AR_RxAntenna_S 8
--
1.8.1.2
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