diff options
Diffstat (limited to 'package/mac80211/patches/526-ath9k_survey_channel_stats.patch')
| -rw-r--r-- | package/mac80211/patches/526-ath9k_survey_channel_stats.patch | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/package/mac80211/patches/526-ath9k_survey_channel_stats.patch b/package/mac80211/patches/526-ath9k_survey_channel_stats.patch new file mode 100644 index 0000000000..842dc812a0 --- /dev/null +++ b/package/mac80211/patches/526-ath9k_survey_channel_stats.patch @@ -0,0 +1,165 @@ +--- a/drivers/net/wireless/ath/ath9k/ath9k.h ++++ b/drivers/net/wireless/ath/ath9k/ath9k.h +@@ -594,6 +594,8 @@ struct ath_softc { + struct delayed_work wiphy_work; + unsigned long wiphy_scheduler_int; + int wiphy_scheduler_index; ++ struct survey_info *cur_survey; ++ struct survey_info survey[ATH9K_NUM_CHANNELS]; + + struct tasklet_struct intr_tq; + struct tasklet_struct bcon_tasklet; +--- a/drivers/net/wireless/ath/ath9k/main.c ++++ b/drivers/net/wireless/ath/ath9k/main.c +@@ -176,6 +176,49 @@ static void ath_start_ani(struct ath_com + msecs_to_jiffies((u32)ah->config.ani_poll_interval)); + } + ++static void ath_update_survey_nf(struct ath_softc *sc, int channel) ++{ ++ struct ath_hw *ah = sc->sc_ah; ++ struct ath9k_channel *chan = &ah->channels[channel]; ++ struct survey_info *survey = &sc->survey[channel]; ++ ++ if (chan->noisefloor) { ++ survey->filled |= SURVEY_INFO_NOISE_DBM; ++ survey->noise = chan->noisefloor; ++ } ++} ++ ++static void ath_update_survey_stats(struct ath_softc *sc) ++{ ++ struct ath_hw *ah = sc->sc_ah; ++ struct ath_common *common = ath9k_hw_common(ah); ++ int pos = ah->curchan - &ah->channels[0]; ++ struct survey_info *survey = &sc->survey[pos]; ++ struct ath_cycle_counters *cc = &common->cc_survey; ++ unsigned long flags; ++ unsigned int div = common->clockrate * 1000; ++ ++ spin_lock_irqsave(&common->cc_lock, flags); ++ ++ ath_hw_cycle_counters_update(common); ++ ++ if (cc->cycles > 0) { ++ survey->filled |= SURVEY_INFO_CHANNEL_TIME | ++ SURVEY_INFO_CHANNEL_TIME_BUSY | ++ SURVEY_INFO_CHANNEL_TIME_RX | ++ SURVEY_INFO_CHANNEL_TIME_TX; ++ survey->channel_time += cc->cycles / div; ++ survey->channel_time_busy += cc->rx_busy / div; ++ survey->channel_time_rx += cc->rx_frame / div; ++ survey->channel_time_tx += cc->tx_frame / div; ++ } ++ memset(cc, 0, sizeof(*cc)); ++ ++ ath_update_survey_nf(sc, pos); ++ ++ spin_unlock_irqrestore(&common->cc_lock, flags); ++} ++ + /* + * Set/change channels. If the channel is really being changed, it's done + * by reseting the chip. To accomplish this we must first cleanup any pending +@@ -1533,7 +1576,8 @@ static int ath9k_config(struct ieee80211 + { + struct ath_wiphy *aphy = hw->priv; + struct ath_softc *sc = aphy->sc; +- struct ath_common *common = ath9k_hw_common(sc->sc_ah); ++ struct ath_hw *ah = sc->sc_ah; ++ struct ath_common *common = ath9k_hw_common(ah); + struct ieee80211_conf *conf = &hw->conf; + bool disable_radio; + +@@ -1599,6 +1643,10 @@ static int ath9k_config(struct ieee80211 + if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { + struct ieee80211_channel *curchan = hw->conf.channel; + int pos = curchan->hw_value; ++ int old_pos = -1; ++ ++ if (ah->curchan) ++ old_pos = ah->curchan - &ah->channels[0]; + + aphy->chan_idx = pos; + aphy->chan_is_ht = conf_is_ht(conf); +@@ -1626,12 +1674,43 @@ static int ath9k_config(struct ieee80211 + + ath_update_chainmask(sc, conf_is_ht(conf)); + ++ /* update survey stats for the old channel before switching */ ++ ath_update_survey_stats(sc); ++ ++ /* ++ * If the operating channel changes, change the survey in-use flags ++ * along with it. ++ * Reset the survey data for the new channel, unless we're switching ++ * back to the operating channel from an off-channel operation. ++ */ ++ if (!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) && ++ sc->cur_survey != &sc->survey[pos]) { ++ ++ if (sc->cur_survey) ++ sc->cur_survey->filled &= ~SURVEY_INFO_IN_USE; ++ ++ sc->cur_survey = &sc->survey[pos]; ++ ++ memset(sc->cur_survey, 0, sizeof(struct survey_info)); ++ sc->cur_survey->filled |= SURVEY_INFO_IN_USE; ++ } else if (!(sc->survey[pos].filled & SURVEY_INFO_IN_USE)) { ++ memset(&sc->survey[pos], 0, sizeof(struct survey_info)); ++ } ++ + if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) { + ath_print(common, ATH_DBG_FATAL, + "Unable to set channel\n"); + mutex_unlock(&sc->mutex); + return -EINVAL; + } ++ ++ /* ++ * The most recent snapshot of channel->noisefloor for the old ++ * channel is only available after the hardware reset. Copy it to ++ * the survey stats now. ++ */ ++ if (old_pos >= 0) ++ ath_update_survey_nf(sc, old_pos); + } + + skip_chan_change: +@@ -2001,9 +2080,12 @@ static int ath9k_get_survey(struct ieee8 + { + struct ath_wiphy *aphy = hw->priv; + struct ath_softc *sc = aphy->sc; +- struct ath_hw *ah = sc->sc_ah; + struct ieee80211_supported_band *sband; +- struct ath9k_channel *chan; ++ struct ieee80211_channel *chan; ++ int pos; ++ ++ if (idx == 0) ++ ath_update_survey_stats(sc); + + sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ]; + if (sband && idx >= sband->n_channels) { +@@ -2017,17 +2099,10 @@ static int ath9k_get_survey(struct ieee8 + if (!sband || idx >= sband->n_channels) + return -ENOENT; + +- survey->channel = &sband->channels[idx]; +- chan = &ah->channels[survey->channel->hw_value]; +- survey->filled = 0; +- +- if (chan == ah->curchan) +- survey->filled |= SURVEY_INFO_IN_USE; +- +- if (chan->noisefloor) { +- survey->filled |= SURVEY_INFO_NOISE_DBM; +- survey->noise = chan->noisefloor; +- } ++ chan = &sband->channels[idx]; ++ pos = chan->hw_value; ++ memcpy(survey, &sc->survey[pos], sizeof(*survey)); ++ survey->channel = chan; + + return 0; + } |