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-rw-r--r--include/linux/nl80211.h2
-rw-r--r--include/net/cfg80211.h4
-rw-r--r--net/mac80211/Kconfig1
-rw-r--r--net/mac80211/cfg.c3
-rw-r--r--net/mac80211/rx.c1
-rw-r--r--net/mac80211/sta_info.c2
-rw-r--r--net/mac80211/sta_info.h3
-rw-r--r--net/wireless/nl80211.c3
8 files changed, 18 insertions, 1 deletions
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 410a06ea551b..8e28053ea423 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -1191,6 +1191,7 @@ enum nl80211_rate_info {
* station)
* @NL80211_STA_INFO_TX_RETRIES: total retries (u32, to this station)
* @NL80211_STA_INFO_TX_FAILED: total failed packets (u32, to this station)
+ * @NL80211_STA_INFO_SIGNAL_AVG: signal strength average (u8, dBm)
*/
enum nl80211_sta_info {
__NL80211_STA_INFO_INVALID,
@@ -1206,6 +1207,7 @@ enum nl80211_sta_info {
NL80211_STA_INFO_TX_PACKETS,
NL80211_STA_INFO_TX_RETRIES,
NL80211_STA_INFO_TX_FAILED,
+ NL80211_STA_INFO_SIGNAL_AVG,
/* keep last */
__NL80211_STA_INFO_AFTER_LAST,
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 788c3989a9e8..8764c9a5bab7 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -420,6 +420,7 @@ struct station_parameters {
* @STATION_INFO_TX_RETRIES: @tx_retries filled
* @STATION_INFO_TX_FAILED: @tx_failed filled
* @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled
+ * @STATION_INFO_SIGNAL_AVG: @signal_avg filled
*/
enum station_info_flags {
STATION_INFO_INACTIVE_TIME = 1<<0,
@@ -435,6 +436,7 @@ enum station_info_flags {
STATION_INFO_TX_RETRIES = 1<<10,
STATION_INFO_TX_FAILED = 1<<11,
STATION_INFO_RX_DROP_MISC = 1<<12,
+ STATION_INFO_SIGNAL_AVG = 1<<13,
};
/**
@@ -481,6 +483,7 @@ struct rate_info {
* @plid: mesh peer link id
* @plink_state: mesh peer link state
* @signal: signal strength of last received packet in dBm
+ * @signal_avg: signal strength average in dBm
* @txrate: current unicast bitrate to this station
* @rx_packets: packets received from this station
* @tx_packets: packets transmitted to this station
@@ -501,6 +504,7 @@ struct station_info {
u16 plid;
u8 plink_state;
s8 signal;
+ s8 signal_avg;
struct rate_info txrate;
u32 rx_packets;
u32 tx_packets;
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index 4d6f8653ec88..798d9b9462e2 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -6,6 +6,7 @@ config MAC80211
select CRYPTO_ARC4
select CRYPTO_AES
select CRC32
+ select AVERAGE
---help---
This option enables the hardware independent IEEE 802.11
networking stack.
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 68329d713c02..af9620406321 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -342,8 +342,9 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
(sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
- sinfo->filled |= STATION_INFO_SIGNAL;
+ sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
sinfo->signal = (s8)sta->last_signal;
+ sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
}
sinfo->txrate.flags = 0;
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 6289525c0998..2fe8f5f86499 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1163,6 +1163,7 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
sta->rx_fragments++;
sta->rx_bytes += rx->skb->len;
sta->last_signal = status->signal;
+ ewma_add(&sta->avg_signal, -status->signal);
/*
* Change STA power saving mode only at the end of a frame
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index eff58571fd7e..c426504ed1cf 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -244,6 +244,8 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
sta->local = local;
sta->sdata = sdata;
+ ewma_init(&sta->avg_signal, 1024, 8);
+
if (sta_prepare_rate_control(local, sta, gfp)) {
kfree(sta);
return NULL;
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 05f11302443b..fdca52cf88de 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -13,6 +13,7 @@
#include <linux/types.h>
#include <linux/if_ether.h>
#include <linux/workqueue.h>
+#include <linux/average.h>
#include "key.h"
/**
@@ -223,6 +224,7 @@ enum plink_state {
* @rx_fragments: number of received MPDUs
* @rx_dropped: number of dropped MPDUs from this STA
* @last_signal: signal of last received frame from this STA
+ * @avg_signal: moving average of signal of received frames from this STA
* @last_seq_ctrl: last received seq/frag number from this STA (per RX queue)
* @tx_filtered_count: number of frames the hardware filtered for this STA
* @tx_retry_failed: number of frames that failed retry
@@ -291,6 +293,7 @@ struct sta_info {
unsigned long rx_fragments;
unsigned long rx_dropped;
int last_signal;
+ struct ewma avg_signal;
__le16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
/* Updated from TX status path only, no locking requirements */
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 56508d40c740..2cf03331d4a2 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1896,6 +1896,9 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
if (sinfo->filled & STATION_INFO_SIGNAL)
NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
sinfo->signal);
+ if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
+ NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
+ sinfo->signal_avg);
if (sinfo->filled & STATION_INFO_TX_BITRATE) {
txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
if (!txrate)