ath9k: Add RSSI information from control and extension chains

Export RSSI information from all the control and extension
channel chains to debugfs. Also add rx antenna information
to debugfs. This will be useful for debugging purpose.

Signed-off-by: Senthil Balasubramanian <senthilkumar@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 a762cadb3ab754c4621b7973a8b3af1bc0535b2d..34f191ec8e8cab2b3a043dcf1640fb69984a35d7 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -845,7 +845,7 @@ 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 = 1152;
+       unsigned int len = 0, size = 1400;
        ssize_t retval = 0;
 
        buf = kzalloc(size, GFP_KERNEL);
@@ -874,6 +874,34 @@ static ssize_t read_file_recv(struct file *file, char __user *user_buf,
                        "%18s : %10u\n", "DECRYPT BUSY ERR",
                        sc->debug.stats.rxstats.decrypt_busy_err);
 
+       len += snprintf(buf + len, size - len,
+                       "%18s : %10d\n", "RSSI-CTL0",
+                       sc->debug.stats.rxstats.rs_rssi_ctl0);
+
+       len += snprintf(buf + len, size - len,
+                       "%18s : %10d\n", "RSSI-CTL1",
+                       sc->debug.stats.rxstats.rs_rssi_ctl1);
+
+       len += snprintf(buf + len, size - len,
+                       "%18s : %10d\n", "RSSI-CTL2",
+                       sc->debug.stats.rxstats.rs_rssi_ctl2);
+
+       len += snprintf(buf + len, size - len,
+                       "%18s : %10d\n", "RSSI-EXT0",
+                       sc->debug.stats.rxstats.rs_rssi_ext0);
+
+       len += snprintf(buf + len, size - len,
+                       "%18s : %10d\n", "RSSI-EXT1",
+                       sc->debug.stats.rxstats.rs_rssi_ext1);
+
+       len += snprintf(buf + len, size - len,
+                       "%18s : %10d\n", "RSSI-EXT2",
+                       sc->debug.stats.rxstats.rs_rssi_ext2);
+
+       len += snprintf(buf + len, size - len,
+                       "%18s : %10d\n", "Rx Antenna",
+                       sc->debug.stats.rxstats.rs_antenna);
+
        PHY_ERR("UNDERRUN", ATH9K_PHYERR_UNDERRUN);
        PHY_ERR("TIMING", ATH9K_PHYERR_TIMING);
        PHY_ERR("PARITY", ATH9K_PHYERR_PARITY);
@@ -948,6 +976,16 @@ void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs)
                RX_PHY_ERR_INC(phyerr);
        }
 
+       sc->debug.stats.rxstats.rs_rssi_ctl0 = rs->rs_rssi_ctl0;
+       sc->debug.stats.rxstats.rs_rssi_ctl1 = rs->rs_rssi_ctl1;
+       sc->debug.stats.rxstats.rs_rssi_ctl2 = rs->rs_rssi_ctl2;
+
+       sc->debug.stats.rxstats.rs_rssi_ext0 = rs->rs_rssi_ext0;
+       sc->debug.stats.rxstats.rs_rssi_ext1 = rs->rs_rssi_ext1;
+       sc->debug.stats.rxstats.rs_rssi_ext2 = rs->rs_rssi_ext2;
+
+       sc->debug.stats.rxstats.rs_antenna = rs->rs_antenna;
+
 #undef RX_STAT_INC
 #undef RX_PHY_ERR_INC
 }

diff --git a/drivers/net/wireless/ath/ath9k/debug.h b/drivers/net/wireless/ath/ath9k/debug.h
index 59338de0ce19bdaef71d4a0a4c5b1a7594628eb6..1f9f8eada465d88331e46a334aeaa31c7da05e55 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/debug.h
+++ b/drivers/net/wireless/ath/ath9k/debug.h
@@ -157,6 +157,13 @@ struct ath_rx_stats {
        u32 post_delim_crc_err;
        u32 decrypt_busy_err;
        u32 phy_err_stats[ATH9K_PHYERR_MAX];
+       int8_t rs_rssi_ctl0;
+       int8_t rs_rssi_ctl1;
+       int8_t rs_rssi_ctl2;
+       int8_t rs_rssi_ext0;
+       int8_t rs_rssi_ext1;
+       int8_t rs_rssi_ext2;
+       u8 rs_antenna;
 };
 
 struct ath_stats {