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mac80211: add an rx flag for ignoring a packet's signal strength

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For A-MPDU rx it makes sense to only process the signal strength once per
aggregate instead of once per subframe. Additonally, some hardware (e.g.
Atheros) only provides valid signal strength information for the last
subframe.

Signed-off-by: Felix Fietkau <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
This commit is contained in:
Felix Fietkau 2012-03-01 18:00:07 +01:00 • committed by John W. Linville
commit fe8431f89e
2 changed files with 9 additions and 3 deletions
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9
net/mac80211/rx.c
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@ -177,7 +177,8 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
pos += 2;
/* IEEE80211_RADIOTAP_DBM_ANTSIGNAL */
if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM &&
!(status->flag & RX_FLAG_NO_SIGNAL_VAL)) {
*pos = status->signal;
rthdr->it_present |=
cpu_to_le32(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL);
@ -1309,8 +1310,10 @@ 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);
if (!(status->flag & RX_FLAG_NO_SIGNAL_VAL)) {
sta->last_signal = status->signal;
ewma_add(&sta->avg_signal, -status->signal);
}
/*
* Change STA power saving mode only at the end of a frame