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authorJohannes Berg <johannes.berg@intel.com>2015-07-13 13:26:46 +0300
committerJohannes Berg <johannes.berg@intel.com>2015-08-14 18:49:53 +0300
commit40d9a38ad3b7029be9c278738b67cbdb6349ce85 (patch)
treee71dd40eb0afb147df45a91d36cb69faa3630880
parent2377799c084d86d22074cd4acd20edc32024d669 (diff)
downloadlinux-40d9a38ad3b7029be9c278738b67cbdb6349ce85.tar.xz
mac80211: use DECLARE_EWMA
Instead of using the out-of-line average calculation, use the new DECLARE_EWMA() macro to declare a signal EWMA, and use that. This actually *reduces* the code size slightly (on x86-64) while also reducing the station info size by 80 bytes. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
-rw-r--r--net/mac80211/Kconfig1
-rw-r--r--net/mac80211/mesh_plink.c2
-rw-r--r--net/mac80211/rx.c4
-rw-r--r--net/mac80211/sta_info.c9
-rw-r--r--net/mac80211/sta_info.h6
5 files changed, 12 insertions, 10 deletions
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index 086de496a4c1..3891cbd2adea 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -7,7 +7,6 @@ config MAC80211
select CRYPTO_CCM
select CRYPTO_GCM
select CRC32
- select AVERAGE
---help---
This option enables the hardware independent IEEE 802.11
networking stack.
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index e12be2e4e8df..58384642e03c 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -60,7 +60,7 @@ static bool rssi_threshold_check(struct ieee80211_sub_if_data *sdata,
{
s32 rssi_threshold = sdata->u.mesh.mshcfg.rssi_threshold;
return rssi_threshold == 0 ||
- (sta && (s8) -ewma_read(&sta->avg_signal) > rssi_threshold);
+ (sta && (s8) -ewma_signal_read(&sta->avg_signal) > rssi_threshold);
}
/**
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 4d217d3265f4..5bc0b88d9eb1 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1428,7 +1428,7 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
sta->rx_bytes += rx->skb->len;
if (!(status->flag & RX_FLAG_NO_SIGNAL_VAL)) {
sta->last_signal = status->signal;
- ewma_add(&sta->avg_signal, -status->signal);
+ ewma_signal_add(&sta->avg_signal, -status->signal);
}
if (status->chains) {
@@ -1440,7 +1440,7 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
continue;
sta->chain_signal_last[i] = signal;
- ewma_add(&sta->chain_signal_avg[i], -signal);
+ ewma_signal_add(&sta->chain_signal_avg[i], -signal);
}
}
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 70cd9fa57424..64f1936350c6 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -341,9 +341,9 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
ktime_get_ts(&uptime);
sta->last_connected = uptime.tv_sec;
- ewma_init(&sta->avg_signal, 1024, 8);
+ ewma_signal_init(&sta->avg_signal);
for (i = 0; i < ARRAY_SIZE(sta->chain_signal_avg); i++)
- ewma_init(&sta->chain_signal_avg[i], 1024, 8);
+ ewma_signal_init(&sta->chain_signal_avg[i]);
if (local->ops->wake_tx_queue) {
void *txq_data;
@@ -1896,7 +1896,8 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
}
if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL_AVG))) {
- sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
+ sinfo->signal_avg =
+ (s8) -ewma_signal_read(&sta->avg_signal);
sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
}
}
@@ -1911,7 +1912,7 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
sinfo->chain_signal[i] = sta->chain_signal_last[i];
sinfo->chain_signal_avg[i] =
- (s8) -ewma_read(&sta->chain_signal_avg[i]);
+ (s8) -ewma_signal_read(&sta->chain_signal_avg[i]);
}
}
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 1d2805c598c0..b087c71ff7fe 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -320,6 +320,8 @@ struct mesh_sta {
unsigned int fail_avg;
};
+DECLARE_EWMA(signal, 1024, 8)
+
/**
* struct sta_info - STA information
*
@@ -462,12 +464,12 @@ struct sta_info {
unsigned long rx_fragments;
unsigned long rx_dropped;
int last_signal;
- struct ewma avg_signal;
+ struct ewma_signal avg_signal;
int last_ack_signal;
u8 chains;
s8 chain_signal_last[IEEE80211_MAX_CHAINS];
- struct ewma chain_signal_avg[IEEE80211_MAX_CHAINS];
+ struct ewma_signal chain_signal_avg[IEEE80211_MAX_CHAINS];
/* Plus 1 for non-QoS frames */
__le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1];