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77 lines
2.4 KiB
Diff
77 lines
2.4 KiB
Diff
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From: Zefir Kurtisi <zefir.kurtisi@neratec.com>
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Date: Tue, 10 Mar 2015 17:49:30 +0100
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Subject: [PATCH] ath9k: add DFS support for extension channel
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In HT40 modes, pulse events on primary and extension
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channel are processed individually. If valid, a pulse
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event will be fed into the detector
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* for primary frequency, or
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* for extension frequency (+/-20MHz based on HT40-mode)
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* or both
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With that, a 40MHz radar will result in two individual
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radar events.
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Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
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---
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--- a/drivers/net/wireless/ath/ath9k/dfs.c
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+++ b/drivers/net/wireless/ath/ath9k/dfs.c
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@@ -126,8 +126,19 @@ ath9k_postprocess_radar_event(struct ath
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DFS_STAT_INC(sc, pulses_detected);
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return true;
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}
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-#undef PRI_CH_RADAR_FOUND
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-#undef EXT_CH_RADAR_FOUND
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+
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+static void
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+ath9k_dfs_process_radar_pulse(struct ath_softc *sc, struct pulse_event *pe)
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+{
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+ struct dfs_pattern_detector *pd = sc->dfs_detector;
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+ DFS_STAT_INC(sc, pulses_processed);
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+ if (pd == NULL)
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+ return;
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+ if (!pd->add_pulse(pd, pe))
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+ return;
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+ DFS_STAT_INC(sc, radar_detected);
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+ ieee80211_radar_detected(sc->hw);
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+}
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/*
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* DFS: check PHY-error for radar pulse and feed the detector
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@@ -176,18 +187,21 @@ void ath9k_dfs_process_phyerr(struct ath
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ard.pulse_length_pri = vdata_end[-3];
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pe.freq = ah->curchan->channel;
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pe.ts = mactime;
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- if (ath9k_postprocess_radar_event(sc, &ard, &pe)) {
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- struct dfs_pattern_detector *pd = sc->dfs_detector;
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- ath_dbg(common, DFS,
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- "ath9k_dfs_process_phyerr: channel=%d, ts=%llu, "
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- "width=%d, rssi=%d, delta_ts=%llu\n",
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- pe.freq, pe.ts, pe.width, pe.rssi,
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- pe.ts - sc->dfs_prev_pulse_ts);
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- sc->dfs_prev_pulse_ts = pe.ts;
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- DFS_STAT_INC(sc, pulses_processed);
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- if (pd != NULL && pd->add_pulse(pd, &pe)) {
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- DFS_STAT_INC(sc, radar_detected);
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- ieee80211_radar_detected(sc->hw);
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- }
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+ if (!ath9k_postprocess_radar_event(sc, &ard, &pe))
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+ return;
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+
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+ ath_dbg(common, DFS,
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+ "ath9k_dfs_process_phyerr: type=%d, freq=%d, ts=%llu, "
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+ "width=%d, rssi=%d, delta_ts=%llu\n",
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+ ard.pulse_bw_info, pe.freq, pe.ts, pe.width, pe.rssi,
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+ pe.ts - sc->dfs_prev_pulse_ts);
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+ sc->dfs_prev_pulse_ts = pe.ts;
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+ if (ard.pulse_bw_info & PRI_CH_RADAR_FOUND)
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+ ath9k_dfs_process_radar_pulse(sc, &pe);
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+ if (ard.pulse_bw_info & EXT_CH_RADAR_FOUND) {
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+ pe.freq += IS_CHAN_HT40PLUS(ah->curchan) ? 20 : -20;
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+ ath9k_dfs_process_radar_pulse(sc, &pe);
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}
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}
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+#undef PRI_CH_RADAR_FOUND
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+#undef EXT_CH_RADAR_FOUND
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