ath9k: Add debug counters for TX
Location: ath9k/phy#/xmit
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 9f99f00..9e36920 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -486,6 +486,83 @@
.owner = THIS_MODULE
};
+#define PR(str, elem) \
+ do { \
+ len += snprintf(buf + len, size - len, \
+ "%s%13u%11u%10u%10u\n", str, \
+ sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_BE]].elem, \
+ sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_BK]].elem, \
+ sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_VI]].elem, \
+ sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_VO]].elem); \
+} while(0)
+
+static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath_softc *sc = file->private_data;
+ char *buf;
+ unsigned int len = 0, size = 2048;
+ ssize_t retval = 0;
+
+ buf = kzalloc(size, GFP_KERNEL);
+ if (buf == NULL)
+ return 0;
+
+ len += sprintf(buf, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO");
+
+ PR("MPDUs Queued: ", queued);
+ PR("MPDUs Completed: ", completed);
+ PR("Aggregates: ", a_aggr);
+ PR("AMPDUs Queued: ", a_queued);
+ PR("AMPDUs Completed:", a_completed);
+ PR("AMPDUs Retried: ", a_retries);
+ PR("AMPDUs XRetried: ", a_xretries);
+ PR("FIFO Underrun: ", fifo_underrun);
+ PR("TXOP Exceeded: ", xtxop);
+ PR("TXTIMER Expiry: ", timer_exp);
+ PR("DESC CFG Error: ", desc_cfg_err);
+ PR("DATA Underrun: ", data_underrun);
+ PR("DELIM Underrun: ", delim_underrun);
+
+ retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+ kfree(buf);
+
+ return retval;
+}
+
+void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq,
+ struct ath_buf *bf)
+{
+ struct ath_desc *ds = bf->bf_desc;
+
+ if (bf_isampdu(bf)) {
+ if (bf_isxretried(bf))
+ TX_STAT_INC(txq->axq_qnum, a_xretries);
+ else
+ TX_STAT_INC(txq->axq_qnum, a_completed);
+ } else {
+ TX_STAT_INC(txq->axq_qnum, completed);
+ }
+
+ if (ds->ds_txstat.ts_status & ATH9K_TXERR_FIFO)
+ TX_STAT_INC(txq->axq_qnum, fifo_underrun);
+ if (ds->ds_txstat.ts_status & ATH9K_TXERR_XTXOP)
+ TX_STAT_INC(txq->axq_qnum, xtxop);
+ if (ds->ds_txstat.ts_status & ATH9K_TXERR_TIMER_EXPIRED)
+ TX_STAT_INC(txq->axq_qnum, timer_exp);
+ if (ds->ds_txstat.ts_flags & ATH9K_TX_DESC_CFG_ERR)
+ TX_STAT_INC(txq->axq_qnum, desc_cfg_err);
+ if (ds->ds_txstat.ts_flags & ATH9K_TX_DATA_UNDERRUN)
+ TX_STAT_INC(txq->axq_qnum, data_underrun);
+ if (ds->ds_txstat.ts_flags & ATH9K_TX_DELIM_UNDERRUN)
+ TX_STAT_INC(txq->axq_qnum, delim_underrun);
+}
+
+static const struct file_operations fops_xmit = {
+ .read = read_file_xmit,
+ .open = ath9k_debugfs_open,
+ .owner = THIS_MODULE
+};
int ath9k_init_debug(struct ath_softc *sc)
{
@@ -529,6 +606,13 @@
if (!sc->debug.debugfs_wiphy)
goto err;
+ sc->debug.debugfs_xmit = debugfs_create_file("xmit",
+ S_IRUSR,
+ sc->debug.debugfs_phy,
+ sc, &fops_xmit);
+ if (!sc->debug.debugfs_xmit)
+ goto err;
+
return 0;
err:
ath9k_exit_debug(sc);
@@ -537,6 +621,7 @@
void ath9k_exit_debug(struct ath_softc *sc)
{
+ debugfs_remove(sc->debug.debugfs_xmit);
debugfs_remove(sc->debug.debugfs_wiphy);
debugfs_remove(sc->debug.debugfs_rcstat);
debugfs_remove(sc->debug.debugfs_interrupt);