From 6e0e0bf80c963d83f511e1cda652630cf31ebf85 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Mon, 13 Oct 2008 14:08:10 -0700 Subject: [PATCH] ath5k: correct ath5k signal quality This adjusts ath5k's signal quality reporting taking into consideration received beacons at an RSSI of 35 should indicate you can use of 54 Mbps on a single stream card (all ath5k cards) reliably. Signed-off-by: Luis R. Rodriguez Acked-by: Nick Kossifidis Signed-off-by: John W. Linville --- drivers/net/wireless/ath5k/base.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c index c98380845fa7..b1e9a47c1c55 100644 --- a/drivers/net/wireless/ath5k/base.c +++ b/drivers/net/wireless/ath5k/base.c @@ -1778,7 +1778,17 @@ ath5k_tasklet_rx(unsigned long data) rxs.noise = sc->ah->ah_noise_floor; rxs.signal = rxs.noise + rs.rs_rssi; - rxs.qual = rs.rs_rssi * 100 / 64; + + /* An rssi of 35 indicates you should be able use + * 54 Mbps reliably. A more elaborate scheme can be used + * here but it requires a map of SNR/throughput for each + * possible mode used */ + rxs.qual = rs.rs_rssi * 100 / 35; + + /* rssi can be more than 35 though, anything above that + * should be considered at 100% */ + if (rxs.qual > 100) + rxs.qual = 100; rxs.antenna = rs.rs_antenna; rxs.rate_idx = ath5k_hw_to_driver_rix(sc, rs.rs_rate);