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authorFelix Fietkau <nbd@openwrt.org>2013-04-22 16:29:31 +0200
committerJohannes Berg <johannes.berg@intel.com>2013-05-16 22:39:38 +0200
commitef0621e805f9ef76eaf31ce6205028fe467e9ca9 (patch)
tree44a6af5c68b914cc8bec0b08b5a72d9ed7d6ef00 /net/mac80211
parent119363c7dc2bcc0c33c255a7b4979c8c0fdc1896 (diff)
downloadop-kernel-dev-ef0621e805f9ef76eaf31ce6205028fe467e9ca9.zip
op-kernel-dev-ef0621e805f9ef76eaf31ce6205028fe467e9ca9.tar.gz
mac80211: add support for per-chain signal strength reporting
Signed-off-by: Felix Fietkau <nbd@openwrt.org> [fix unit documentation] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/cfg.c13
-rw-r--r--net/mac80211/rx.c14
-rw-r--r--net/mac80211/sta_info.c2
-rw-r--r--net/mac80211/sta_info.h5
4 files changed, 33 insertions, 1 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 1a89c80..1f51bdf 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -444,7 +444,7 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
struct ieee80211_local *local = sdata->local;
struct timespec uptime;
u64 packets = 0;
- int ac;
+ int i, ac;
sinfo->generation = sdata->local->sta_generation;
@@ -488,6 +488,17 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
sinfo->signal = (s8)sta->last_signal;
sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
}
+ if (sta->chains) {
+ sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
+ STATION_INFO_CHAIN_SIGNAL_AVG;
+
+ sinfo->chains = sta->chains;
+ 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]);
+ }
+ }
sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
sta_set_rate_info_rx(sta, &sinfo->rxrate);
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index c8447af..22e412b 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1372,6 +1372,7 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
struct sk_buff *skb = rx->skb;
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ int i;
if (!sta)
return RX_CONTINUE;
@@ -1422,6 +1423,19 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
ewma_add(&sta->avg_signal, -status->signal);
}
+ if (status->chains) {
+ sta->chains = status->chains;
+ for (i = 0; i < ARRAY_SIZE(status->chain_signal); i++) {
+ int signal = status->chain_signal[i];
+
+ if (!(status->chains & BIT(i)))
+ continue;
+
+ sta->chain_signal_last[i] = signal;
+ ewma_add(&sta->chain_signal_avg[i], -signal);
+ }
+ }
+
/*
* Change STA power saving mode only at the end of a frame
* exchange sequence.
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 11216bc..a04c5671 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -358,6 +358,8 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
do_posix_clock_monotonic_gettime(&uptime);
sta->last_connected = uptime.tv_sec;
ewma_init(&sta->avg_signal, 1024, 8);
+ for (i = 0; i < ARRAY_SIZE(sta->chain_signal_avg); i++)
+ ewma_init(&sta->chain_signal_avg[i], 1024, 8);
if (sta_prepare_rate_control(local, sta, gfp)) {
kfree(sta);
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index adc3004..41c28b9 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -344,6 +344,11 @@ struct sta_info {
int last_signal;
struct ewma avg_signal;
int last_ack_signal;
+
+ u8 chains;
+ s8 chain_signal_last[IEEE80211_MAX_CHAINS];
+ struct ewma chain_signal_avg[IEEE80211_MAX_CHAINS];
+
/* Plus 1 for non-QoS frames */
__le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1];
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