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mac80211: average ack rssi support for data frames

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The driver will process the RSSI if available and send it to mac80211.
mac80211 will compute the weighted average of ack RSSI for stations.

Signed-off-by: Balaji Pothunoori <bpothuno@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Balaji Pothunoori 2018-04-16 20:18:41 +05:30 committed by Johannes Berg
parent 81d5439da8
commit cc60dbbfed
3 changed files with 14 additions and 0 deletions
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10
net/mac80211/sta_info.c
View file

@ -358,6 +358,7 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
sta->last_connected = ktime_get_seconds();
ewma_signal_init(&sta->rx_stats_avg.signal);
ewma_avg_signal_init(&sta->status_stats.avg_ack_signal);
for (i = 0; i < ARRAY_SIZE(sta->rx_stats_avg.chain_signal); i++)
ewma_signal_init(&sta->rx_stats_avg.chain_signal[i]);
@ -2294,6 +2295,15 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
sinfo->ack_signal = sta->status_stats.last_ack_signal;
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL);
}
if (ieee80211_hw_check(&sta->local->hw, REPORTS_TX_ACK_STATUS) &&
!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_DATA_ACK_SIGNAL_AVG))) {
sinfo->avg_ack_signal =
-(s8)ewma_avg_signal_read(
&sta->status_stats.avg_ack_signal);
sinfo->filled |=
BIT_ULL(NL80211_STA_INFO_DATA_ACK_SIGNAL_AVG);
}
}
u32 sta_get_expected_throughput(struct sta_info *sta)

2
net/mac80211/sta_info.h
View file

@ -119,6 +119,7 @@ enum ieee80211_sta_info_flags {
#define HT_AGG_STATE_START_CB 6
#define HT_AGG_STATE_STOP_CB 7
DECLARE_EWMA(avg_signal, 10, 8)
enum ieee80211_agg_stop_reason {
AGG_STOP_DECLINED,
AGG_STOP_LOCAL_REQUEST,
@ -550,6 +551,7 @@ struct sta_info {
unsigned long last_ack;
s8 last_ack_signal;
bool ack_signal_filled;
struct ewma_avg_signal avg_ack_signal;
} status_stats;
/* Updated from TX path only, no locking requirements */

2
net/mac80211/status.c
View file

@ -195,6 +195,8 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
sta->status_stats.last_ack_signal =
(s8)txinfo->status.ack_signal;
sta->status_stats.ack_signal_filled = true;
ewma_avg_signal_add(&sta->status_stats.avg_ack_signal,
-txinfo->status.ack_signal);
}
}