package/mac80211/patches/580-mac80211_ignore_bad_signal_values.patch

   1 --- a/include/net/mac80211.h
   2 +++ b/include/net/mac80211.h
   3 @@ -659,6 +659,8 @@ ieee80211_tx_info_clear_status(struct ie
   4   * @RX_FLAG_HT: HT MCS was used and rate_idx is MCS index
   5   * @RX_FLAG_40MHZ: HT40 (40 MHz) was used
   6   * @RX_FLAG_SHORT_GI: Short guard interval was used
   7 + * @RX_FLAG_NO_SIGNAL_VAL: The signal strength value is not present.
   8 + *     Valid only for data frames (mainly A-MPDU)
   9   */
  10  enum mac80211_rx_flags {
  11         RX_FLAG_MMIC_ERROR      = 1<<0,
  12 @@ -672,6 +674,7 @@ enum mac80211_rx_flags {
  13         RX_FLAG_HT              = 1<<9,
  14         RX_FLAG_40MHZ           = 1<<10,
  15         RX_FLAG_SHORT_GI        = 1<<11,
  16 +       RX_FLAG_NO_SIGNAL_VAL   = 1<<12,
  17  };
  18
  19  /**
  20 --- a/net/mac80211/rx.c
  21 +++ b/net/mac80211/rx.c
  22 @@ -177,7 +177,8 @@ ieee80211_add_rx_radiotap_header(struct
  23         pos += 2;
  24
  25         /* IEEE80211_RADIOTAP_DBM_ANTSIGNAL */
  26 -       if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
  27 +       if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM &&
  28 +           !(status->flag & RX_FLAG_NO_SIGNAL_VAL)) {
  29                 *pos = status->signal;
  30                 rthdr->it_present |=
  31                         cpu_to_le32(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL);
  32 @@ -1310,8 +1311,10 @@ ieee80211_rx_h_sta_process(struct ieee80
  33
  34         sta->rx_fragments++;
  35         sta->rx_bytes += rx->skb->len;
  36 -       sta->last_signal = status->signal;
  37 -       ewma_add(&sta->avg_signal, -status->signal);
  38 +       if (!(status->flag & RX_FLAG_NO_SIGNAL_VAL)) {
  39 +               sta->last_signal = status->signal;
  40 +               ewma_add(&sta->avg_signal, -status->signal);
  41 +       }
  42
  43         if (status->chains) {
  44                 sta->chains = status->chains;