ath9k: Add PER to RC debug statistics

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 14 insertions, 10 deletions

diff --git a/drivers/net/wireless/ath9k/debug.c b/drivers/net/wireless/ath9k/debug.c
index 800ad5926b6f..0c422c50e4f0 100644
--- a/drivers/net/wireless/ath9k/debug.c
+++ b/drivers/net/wireless/ath9k/debug.c
@@ -258,13 +258,14 @@ void ath_debug_stat_rc(struct ath_softc *sc, struct sk_buff *skb)
 
 /* FIXME: legacy rates, later on .. */
 void ath_debug_stat_retries(struct ath_softc *sc, int rix,
-                            int xretries, int retries)
+                            int xretries, int retries, u8 per)
 {
         if (conf_is_ht(&sc->hw->conf)) {
                 int idx = sc->cur_rate_table->info[rix].dot11rate;
 
                 sc->debug.stats.n_rcstats[idx].xretries += xretries;
                 sc->debug.stats.n_rcstats[idx].retries += retries;
+                sc->debug.stats.n_rcstats[idx].per = per;
         }
 }
 
@@ -277,15 +278,16 @@ static ssize_t ath_read_file_stat_11n_rc(struct file *file,
         unsigned int len = 0;
         int i = 0;
 
-        len += sprintf(buf, "%7s %13s %8s %8s\n\n", "Rate", "Success",
-                       "Retries", "XRetries");
+        len += sprintf(buf, "%7s %13s %8s %8s %6s\n\n", "Rate", "Success",
+                       "Retries", "XRetries", "PER");
 
         for (i = 0; i <= 15; i++) {
                 len += snprintf(buf + len, sizeof(buf) - len,
-                                "%5s%3d: %8u %8u %8u\n", "MCS", i,
+                                "%5s%3d: %8u %8u %8u %8u\n", "MCS", i,
                                 sc->debug.stats.n_rcstats[i].success,
                                 sc->debug.stats.n_rcstats[i].retries,
-                                sc->debug.stats.n_rcstats[i].xretries);
+                                sc->debug.stats.n_rcstats[i].xretries,
+                                sc->debug.stats.n_rcstats[i].per);
         }
 
         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
diff --git a/drivers/net/wireless/ath9k/debug.h b/drivers/net/wireless/ath9k/debug.h
index 61e969894c0a..01681f2d0549 100644
--- a/drivers/net/wireless/ath9k/debug.h
+++ b/drivers/net/wireless/ath9k/debug.h
@@ -91,12 +91,13 @@ struct ath_11n_rc_stats {
         u32 success;
         u32 retries;
         u32 xretries;
+        u8 per;
 };
 
 struct ath_stats {
         struct ath_interrupt_stats istats;
-        struct ath_legacy_rc_stats legacy_rcstats[12]; /* max(11a,11b,11g) */
-        struct ath_11n_rc_stats n_rcstats[16]; /* 0..15 MCS rates */
+        struct ath_legacy_rc_stats legacy_rcstats[12];  /* max(11a,11b,11g) */
+        struct ath_11n_rc_stats n_rcstats[16];          /* 0..15 MCS rates */
 };
 
 struct ath9k_debug {
@@ -115,7 +116,7 @@ void ath9k_exit_debug(struct ath_softc *sc);
 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status);
 void ath_debug_stat_rc(struct ath_softc *sc, struct sk_buff *skb);
 void ath_debug_stat_retries(struct ath_softc *sc, int rix,
-                            int xretries, int retries);
+                            int xretries, int retries, u8 per);
 
 #else
 
@@ -144,7 +145,7 @@ static inline void ath_debug_stat_rc(struct ath_softc *sc,
 }
 
 static inline void ath_debug_stat_retries(struct ath_softc *sc, int rix,
-                                          int xretries, int retries)
+                                          int xretries, int retries, u8 per)
 {
 }
 
diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c
index 0e3e2b7dd2ec..cf0559f183af 100644
--- a/drivers/net/wireless/ath9k/rc.c
+++ b/drivers/net/wireless/ath9k/rc.c
@@ -1267,7 +1267,8 @@ static void ath_rc_update_ht(struct ath_softc *sc,
                 ath_rc_priv->per_down_time = now_msec;
         }
 
-        ath_debug_stat_retries(sc, tx_rate, xretries, retries);
+        ath_debug_stat_retries(sc, tx_rate, xretries, retries,
+                               ath_rc_priv->state[tx_rate].per);
 
 #undef CHK_RSSI
 }