diff options
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/ani.c | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/ath5k.h | 26 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/base.c | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/debug.c | 2 |
5 files changed, 8 insertions, 29 deletions
diff --git a/drivers/net/wireless/ath/ath5k/Kconfig b/drivers/net/wireless/ath/ath5k/Kconfig index eb83b7b4d0e3..47844575caa3 100644 --- a/drivers/net/wireless/ath/ath5k/Kconfig +++ b/drivers/net/wireless/ath/ath5k/Kconfig @@ -4,6 +4,7 @@ config ATH5K select MAC80211_LEDS select LEDS_CLASS select NEW_LEDS + select AVERAGE ---help--- This module adds support for wireless adapters based on Atheros 5xxx chipset. diff --git a/drivers/net/wireless/ath/ath5k/ani.c b/drivers/net/wireless/ath/ath5k/ani.c index f1419198a479..db98a853ff35 100644 --- a/drivers/net/wireless/ath/ath5k/ani.c +++ b/drivers/net/wireless/ath/ath5k/ani.c @@ -216,7 +216,7 @@ static void ath5k_ani_raise_immunity(struct ath5k_hw *ah, struct ath5k_ani_state *as, bool ofdm_trigger) { - int rssi = ah->ah_beacon_rssi_avg.avg; + int rssi = ewma_read(&ah->ah_beacon_rssi_avg); ATH5K_DBG_UNLIMIT(ah->ah_sc, ATH5K_DEBUG_ANI, "raise immunity (%s)", ofdm_trigger ? "ODFM" : "CCK"); @@ -301,7 +301,7 @@ ath5k_ani_raise_immunity(struct ath5k_hw *ah, struct ath5k_ani_state *as, static void ath5k_ani_lower_immunity(struct ath5k_hw *ah, struct ath5k_ani_state *as) { - int rssi = ah->ah_beacon_rssi_avg.avg; + int rssi = ewma_read(&ah->ah_beacon_rssi_avg); ATH5K_DBG_UNLIMIT(ah->ah_sc, ATH5K_DEBUG_ANI, "lower immunity"); diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h index 308b79e1ff08..2718136e4886 100644 --- a/drivers/net/wireless/ath/ath5k/ath5k.h +++ b/drivers/net/wireless/ath/ath5k/ath5k.h @@ -25,6 +25,7 @@ #include <linux/io.h> #include <linux/types.h> +#include <linux/average.h> #include <net/mac80211.h> /* RX/TX descriptor hw structs @@ -1102,7 +1103,7 @@ struct ath5k_hw { struct ath5k_nfcal_hist ah_nfcal_hist; /* average beacon RSSI in our BSS (used by ANI) */ - struct ath5k_avg_val ah_beacon_rssi_avg; + struct ewma ah_beacon_rssi_avg; /* noise floor from last periodic calibration */ s32 ah_noise_floor; @@ -1315,27 +1316,4 @@ static inline u32 ath5k_hw_bitswap(u32 val, unsigned int bits) return retval; } -#define AVG_SAMPLES 8 -#define AVG_FACTOR 1000 - -/** - * ath5k_moving_average - Exponentially weighted moving average - * @avg: average structure - * @val: current value - * - * This implementation make use of a struct ath5k_avg_val to prevent rounding - * errors. - */ -static inline struct ath5k_avg_val -ath5k_moving_average(const struct ath5k_avg_val avg, const int val) -{ - struct ath5k_avg_val new; - new.avg_weight = avg.avg_weight ? - (((avg.avg_weight * ((AVG_SAMPLES) - 1)) + - (val * (AVG_FACTOR))) / (AVG_SAMPLES)) : - (val * (AVG_FACTOR)); - new.avg = new.avg_weight / (AVG_FACTOR); - return new; -} - #endif diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c index 13735cc899a5..7f783d9462aa 100644 --- a/drivers/net/wireless/ath/ath5k/base.c +++ b/drivers/net/wireless/ath/ath5k/base.c @@ -1301,8 +1301,7 @@ ath5k_update_beacon_rssi(struct ath5k_softc *sc, struct sk_buff *skb, int rssi) memcmp(mgmt->bssid, common->curbssid, ETH_ALEN) != 0) return; - ah->ah_beacon_rssi_avg = ath5k_moving_average(ah->ah_beacon_rssi_avg, - rssi); + ewma_add(&ah->ah_beacon_rssi_avg, rssi); /* in IBSS mode we should keep RSSI statistics per neighbour */ /* le16_to_cpu(mgmt->u.beacon.capab_info) & WLAN_CAPABILITY_IBSS */ @@ -2556,6 +2555,7 @@ ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan) ah->ah_cal_next_full = jiffies; ah->ah_cal_next_ani = jiffies; ah->ah_cal_next_nf = jiffies; + ewma_init(&ah->ah_beacon_rssi_avg, 1000, 8); /* * Change channels and update the h/w rate map if we're switching; diff --git a/drivers/net/wireless/ath/ath5k/debug.c b/drivers/net/wireless/ath/ath5k/debug.c index 54dcf77e9646..7d785cb60ce0 100644 --- a/drivers/net/wireless/ath/ath5k/debug.c +++ b/drivers/net/wireless/ath/ath5k/debug.c @@ -719,7 +719,7 @@ static ssize_t read_file_ani(struct file *file, char __user *user_buf, st->mib_intr); len += snprintf(buf+len, sizeof(buf)-len, "beacon RSSI average:\t%d\n", - sc->ah->ah_beacon_rssi_avg.avg); + (int)ewma_read(&sc->ah->ah_beacon_rssi_avg)); #define CC_PRINT(_struct, _field) \ _struct._field, \ |