store the last noise floor in ath5k_hw and report signal, noise and link
quality values to mac80211, which in turn makes them show up in iwconfig.
ath5k.h, phy.c:
Changes-licensed-under: ISC
base.c:
Changes-licensed-under: 3-clause-BSD
Signed-off-by: Bruno Randolf <bruno@xxxxxxxxxxxxx>
---
drivers/net/wireless/ath5k/ath5k.h | 3 +++
drivers/net/wireless/ath5k/base.c | 22 ++++++++++++++++++++--
drivers/net/wireless/ath5k/phy.c | 2 ++
3 files changed, 25 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath5k/ath5k.h b/drivers/net/wireless/ath5k/ath5k.h
index 5bcbbf9..2e13d79 100644
--- a/drivers/net/wireless/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath5k/ath5k.h
@@ -1003,6 +1003,9 @@ struct ath5k_hw {
struct ieee80211_channel r_last_channel;
} ah_radar;
+ /* noise floor from last periodic calibration */
+ s32 ah_noise_floor;
+
/*
* Function pointers
*/
diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c
index 444e4a7..f288858 100644
--- a/drivers/net/wireless/ath5k/base.c
+++ b/drivers/net/wireless/ath5k/base.c
@@ -435,7 +435,10 @@ ath5k_pci_probe(struct pci_dev *pdev,
hw->flags = IEEE80211_HW_RX_INCLUDES_FCS;
hw->extra_tx_headroom = 2;
hw->channel_change_time = 5000;
- hw->max_rssi = 127; /* FIXME: get a real value for this. */
+ /* these names are misleading */
+ hw->max_rssi = -110; /* signal in dBm */
+ hw->max_noise = -110; /* noise in dBm */
+ hw->max_signal = 100; /* we will provide a percentage based on rssi */
sc = hw->priv;
sc->hw = hw;
sc->pdev = pdev;
@@ -1721,7 +1724,22 @@ accept:
rxs.freq = sc->curchan->freq;
rxs.channel = sc->curchan->chan;
rxs.phymode = sc->curmode;
- rxs.ssi = ds->ds_rxstat.rs_rssi;
+
+ /*
+ * signal quality:
+ * the names here are misleading and the usage of these
+ * values by iwconfig makes it even worse
+ */
+ /* noise floor in dBm, from the last noise calibration */
+ rxs.noise = sc->ah->ah_noise_floor;
+ /* signal level in dBm */
+ rxs.ssi = rxs.noise + ds->ds_rxstat.rs_rssi;
+ /*
+ * "signal" is actually displayed as Link Quality by iwconfig
+ * we provide a percentage based on rssi (assuming max rssi 64)
+ */
+ rxs.signal = ds->ds_rxstat.rs_rssi * 100 / 64;
+
rxs.antenna = ds->ds_rxstat.rs_antenna;
rxs.rate = ds->ds_rxstat.rs_rate;
rxs.flag |= ath5k_rx_decrypted(sc, ds, skb);
diff --git a/drivers/net/wireless/ath5k/phy.c b/drivers/net/wireless/ath5k/phy.c
index f250c2e..52caf8e 100644
--- a/drivers/net/wireless/ath5k/phy.c
+++ b/drivers/net/wireless/ath5k/phy.c
@@ -1562,6 +1562,8 @@ ath5k_hw_noise_floor_calibration(struct ath5k_hw *ah, short freq)
return -EIO;
}
+ ah->ah_noise_floor = noise_floor;
+
return 0;
}
--
1.5.3.4
-
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