1 files changed, 85 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 9f99f00c144..9e369208f7d 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -486,6 +486,83 @@ static const struct file_operations fops_wiphy = {
         .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 @@ int ath9k_init_debug(struct ath_softc *sc)
         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 @@ err:
 
 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);