This file can be used to track frame reception errors.
PHY error counts are also added.
Location: ath9k/phy#/recv
Signed-off-by: Sujith <Sujith.Manoharan@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/debug.c | 118 ++++++++++++++++++++++++++++++++
drivers/net/wireless/ath/ath9k/debug.h | 32 +++++++++
drivers/net/wireless/ath/ath9k/mac.h | 34 +++++++++
drivers/net/wireless/ath/ath9k/recv.c | 2 +
4 files changed, 186 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 592f1b7..9489b6b 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -580,6 +580,116 @@ static const struct file_operations fops_xmit = {
.owner = THIS_MODULE
};
+static ssize_t read_file_recv(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+#define PHY_ERR(s, p) \
+ len += snprintf(buf + len, size - len, "%18s : %10u\n", s, \
+ sc->debug.stats.rxstats.phy_err_stats[p]);
+
+ struct ath_softc *sc = file->private_data;
+ char *buf;
+ unsigned int len = 0, size = 1152;
+ ssize_t retval = 0;
+
+ buf = kzalloc(size, GFP_KERNEL);
+ if (buf == NULL)
+ return 0;
+
+ len += snprintf(buf + len, size - len,
+ "%18s : %10u\n", "CRC ERR",
+ sc->debug.stats.rxstats.crc_err);
+ len += snprintf(buf + len, size - len,
+ "%18s : %10u\n", "DECRYPT CRC ERR",
+ sc->debug.stats.rxstats.decrypt_crc_err);
+ len += snprintf(buf + len, size - len,
+ "%18s : %10u\n", "PHY ERR",
+ sc->debug.stats.rxstats.phy_err);
+ len += snprintf(buf + len, size - len,
+ "%18s : %10u\n", "MIC ERR",
+ sc->debug.stats.rxstats.mic_err);
+ len += snprintf(buf + len, size - len,
+ "%18s : %10u\n", "PRE-DELIM CRC ERR",
+ sc->debug.stats.rxstats.pre_delim_crc_err);
+ len += snprintf(buf + len, size - len,
+ "%18s : %10u\n", "POST-DELIM CRC ERR",
+ sc->debug.stats.rxstats.post_delim_crc_err);
+ len += snprintf(buf + len, size - len,
+ "%18s : %10u\n", "DECRYPT BUSY ERR",
+ sc->debug.stats.rxstats.decrypt_busy_err);
+
+ PHY_ERR("UNDERRUN", ATH9K_PHYERR_UNDERRUN);
+ PHY_ERR("TIMING", ATH9K_PHYERR_TIMING);
+ PHY_ERR("PARITY", ATH9K_PHYERR_PARITY);
+ PHY_ERR("RATE", ATH9K_PHYERR_RATE);
+ PHY_ERR("LENGTH", ATH9K_PHYERR_LENGTH);
+ PHY_ERR("RADAR", ATH9K_PHYERR_RADAR);
+ PHY_ERR("SERVICE", ATH9K_PHYERR_SERVICE);
+ PHY_ERR("TOR", ATH9K_PHYERR_TOR);
+ PHY_ERR("OFDM-TIMING", ATH9K_PHYERR_OFDM_TIMING);
+ PHY_ERR("OFDM-SIGNAL-PARITY", ATH9K_PHYERR_OFDM_SIGNAL_PARITY);
+ PHY_ERR("OFDM-RATE", ATH9K_PHYERR_OFDM_RATE_ILLEGAL);
+ PHY_ERR("OFDM-LENGTH", ATH9K_PHYERR_OFDM_LENGTH_ILLEGAL);
+ PHY_ERR("OFDM-POWER-DROP", ATH9K_PHYERR_OFDM_POWER_DROP);
+ PHY_ERR("OFDM-SERVICE", ATH9K_PHYERR_OFDM_SERVICE);
+ PHY_ERR("OFDM-RESTART", ATH9K_PHYERR_OFDM_RESTART);
+ PHY_ERR("FALSE-RADAR-EXT", ATH9K_PHYERR_FALSE_RADAR_EXT);
+ PHY_ERR("CCK-TIMING", ATH9K_PHYERR_CCK_TIMING);
+ PHY_ERR("CCK-HEADER-CRC", ATH9K_PHYERR_CCK_HEADER_CRC);
+ PHY_ERR("CCK-RATE", ATH9K_PHYERR_CCK_RATE_ILLEGAL);
+ PHY_ERR("CCK-SERVICE", ATH9K_PHYERR_CCK_SERVICE);
+ PHY_ERR("CCK-RESTART", ATH9K_PHYERR_CCK_RESTART);
+ PHY_ERR("CCK-LENGTH", ATH9K_PHYERR_CCK_LENGTH_ILLEGAL);
+ PHY_ERR("CCK-POWER-DROP", ATH9K_PHYERR_CCK_POWER_DROP);
+ PHY_ERR("HT-CRC", ATH9K_PHYERR_HT_CRC_ERROR);
+ PHY_ERR("HT-LENGTH", ATH9K_PHYERR_HT_LENGTH_ILLEGAL);
+ PHY_ERR("HT-RATE", ATH9K_PHYERR_HT_RATE_ILLEGAL);
+
+ retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+ kfree(buf);
+
+ return retval;
+
+#undef PHY_ERR
+}
+
+void ath_debug_stat_rx(struct ath_softc *sc, struct ath_buf *bf)
+{
+#define RX_STAT_INC(c) sc->debug.stats.rxstats.c++
+#define RX_PHY_ERR_INC(c) sc->debug.stats.rxstats.phy_err_stats[c]++
+
+ struct ath_desc *ds = bf->bf_desc;
+ u32 phyerr;
+
+ if (ds->ds_rxstat.rs_status & ATH9K_RXERR_CRC)
+ RX_STAT_INC(crc_err);
+ if (ds->ds_rxstat.rs_status & ATH9K_RXERR_DECRYPT)
+ RX_STAT_INC(decrypt_crc_err);
+ if (ds->ds_rxstat.rs_status & ATH9K_RXERR_MIC)
+ RX_STAT_INC(mic_err);
+ if (ds->ds_rxstat.rs_status & ATH9K_RX_DELIM_CRC_PRE)
+ RX_STAT_INC(pre_delim_crc_err);
+ if (ds->ds_rxstat.rs_status & ATH9K_RX_DELIM_CRC_POST)
+ RX_STAT_INC(post_delim_crc_err);
+ if (ds->ds_rxstat.rs_status & ATH9K_RX_DECRYPT_BUSY)
+ RX_STAT_INC(decrypt_busy_err);
+
+ if (ds->ds_rxstat.rs_status & ATH9K_RXERR_PHY) {
+ RX_STAT_INC(phy_err);
+ phyerr = ds->ds_rxstat.rs_phyerr & 0x24;
+ RX_PHY_ERR_INC(phyerr);
+ }
+
+#undef RX_STAT_INC
+#undef RX_PHY_ERR_INC
+}
+
+static const struct file_operations fops_recv = {
+ .read = read_file_recv,
+ .open = ath9k_debugfs_open,
+ .owner = THIS_MODULE
+};
+
int ath9k_init_debug(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
@@ -632,6 +742,13 @@ int ath9k_init_debug(struct ath_hw *ah)
if (!sc->debug.debugfs_xmit)
goto err;
+ sc->debug.debugfs_recv = debugfs_create_file("recv",
+ S_IRUSR,
+ sc->debug.debugfs_phy,
+ sc, &fops_recv);
+ if (!sc->debug.debugfs_recv)
+ goto err;
+
return 0;
err:
ath9k_exit_debug(ah);
@@ -643,6 +760,7 @@ void ath9k_exit_debug(struct ath_hw *ah)
struct ath_common *common = ath9k_hw_common(ah);
struct ath_softc *sc = (struct ath_softc *) common->priv;
+ debugfs_remove(sc->debug.debugfs_recv);
debugfs_remove(sc->debug.debugfs_xmit);
debugfs_remove(sc->debug.debugfs_wiphy);
debugfs_remove(sc->debug.debugfs_rcstat);
diff --git a/drivers/net/wireless/ath/ath9k/debug.h b/drivers/net/wireless/ath/ath9k/debug.h
index 536663e..86780e6 100644
--- a/drivers/net/wireless/ath/ath9k/debug.h
+++ b/drivers/net/wireless/ath/ath9k/debug.h
@@ -116,10 +116,35 @@ struct ath_tx_stats {
u32 delim_underrun;
};
+/**
+ * struct ath_rx_stats - RX Statistics
+ * @crc_err: No. of frames with incorrect CRC value
+ * @decrypt_crc_err: No. of frames whose CRC check failed after
+ decryption process completed
+ * @phy_err: No. of frames whose reception failed because the PHY
+ encountered an error
+ * @mic_err: No. of frames with incorrect TKIP MIC verification failure
+ * @pre_delim_crc_err: Pre-Frame delimiter CRC error detections
+ * @post_delim_crc_err: Post-Frame delimiter CRC error detections
+ * @decrypt_busy_err: Decryption interruptions counter
+ * @phy_err_stats: Individual PHY error statistics
+ */
+struct ath_rx_stats {
+ u32 crc_err;
+ u32 decrypt_crc_err;
+ u32 phy_err;
+ u32 mic_err;
+ u32 pre_delim_crc_err;
+ u32 post_delim_crc_err;
+ u32 decrypt_busy_err;
+ u32 phy_err_stats[ATH9K_PHYERR_MAX];
+};
+
struct ath_stats {
struct ath_interrupt_stats istats;
struct ath_rc_stats rcstats[RATE_TABLE_SIZE];
struct ath_tx_stats txstats[ATH9K_NUM_TX_QUEUES];
+ struct ath_rx_stats rxstats;
};
struct ath9k_debug {
@@ -130,6 +155,7 @@ struct ath9k_debug {
struct dentry *debugfs_rcstat;
struct dentry *debugfs_wiphy;
struct dentry *debugfs_xmit;
+ struct dentry *debugfs_recv;
struct ath_stats stats;
};
@@ -142,6 +168,7 @@ void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status);
void ath_debug_stat_rc(struct ath_softc *sc, int final_rate);
void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq,
struct ath_buf *bf);
+void ath_debug_stat_rx(struct ath_softc *sc, struct ath_buf *bf);
void ath_debug_stat_retries(struct ath_softc *sc, int rix,
int xretries, int retries, u8 per);
@@ -181,6 +208,11 @@ static inline void ath_debug_stat_tx(struct ath_softc *sc,
{
}
+static inline void ath_debug_stat_rx(struct ath_softc *sc,
+ struct ath_buf *bf)
+{
+}
+
static inline void ath_debug_stat_retries(struct ath_softc *sc, int rix,
int xretries, int retries, u8 per)
{
diff --git a/drivers/net/wireless/ath/ath9k/mac.h b/drivers/net/wireless/ath/ath9k/mac.h
index e185479..29851e6 100644
--- a/drivers/net/wireless/ath/ath9k/mac.h
+++ b/drivers/net/wireless/ath/ath9k/mac.h
@@ -167,6 +167,40 @@ struct ath_rx_status {
#define ATH9K_RXKEYIX_INVALID ((u8)-1)
#define ATH9K_TXKEYIX_INVALID ((u32)-1)
+enum ath9k_phyerr {
+ ATH9K_PHYERR_UNDERRUN = 0, /* Transmit underrun */
+ ATH9K_PHYERR_TIMING = 1, /* Timing error */
+ ATH9K_PHYERR_PARITY = 2, /* Illegal parity */
+ ATH9K_PHYERR_RATE = 3, /* Illegal rate */
+ ATH9K_PHYERR_LENGTH = 4, /* Illegal length */
+ ATH9K_PHYERR_RADAR = 5, /* Radar detect */
+ ATH9K_PHYERR_SERVICE = 6, /* Illegal service */
+ ATH9K_PHYERR_TOR = 7, /* Transmit override receive */
+
+ ATH9K_PHYERR_OFDM_TIMING = 17,
+ ATH9K_PHYERR_OFDM_SIGNAL_PARITY = 18,
+ ATH9K_PHYERR_OFDM_RATE_ILLEGAL = 19,
+ ATH9K_PHYERR_OFDM_LENGTH_ILLEGAL = 20,
+ ATH9K_PHYERR_OFDM_POWER_DROP = 21,
+ ATH9K_PHYERR_OFDM_SERVICE = 22,
+ ATH9K_PHYERR_OFDM_RESTART = 23,
+ ATH9K_PHYERR_FALSE_RADAR_EXT = 24,
+
+ ATH9K_PHYERR_CCK_TIMING = 25,
+ ATH9K_PHYERR_CCK_HEADER_CRC = 26,
+ ATH9K_PHYERR_CCK_RATE_ILLEGAL = 27,
+ ATH9K_PHYERR_CCK_SERVICE = 30,
+ ATH9K_PHYERR_CCK_RESTART = 31,
+ ATH9K_PHYERR_CCK_LENGTH_ILLEGAL = 32,
+ ATH9K_PHYERR_CCK_POWER_DROP = 33,
+
+ ATH9K_PHYERR_HT_CRC_ERROR = 34,
+ ATH9K_PHYERR_HT_LENGTH_ILLEGAL = 35,
+ ATH9K_PHYERR_HT_RATE_ILLEGAL = 36,
+
+ ATH9K_PHYERR_MAX = 37,
+};
+
struct ath_desc {
u32 ds_link;
u32 ds_data;
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index 17b0a6d..40b5d05 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -571,6 +571,8 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush)
hw = ath_get_virt_hw(sc, hdr);
rx_stats = &ds->ds_rxstat;
+ ath_debug_stat_rx(sc, bf);
+
/*
* If we're asked to flush receive queue, directly
* chain it back at the queue without processing it.
--
1.6.6
--
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