| Message ID | 1539580047-22512-1-git-send-email-tamizhr@codeaurora.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ath: fix frequent flase radar detection | expand |
On 10/14/2018 10:07 PM, Tamizh chelvam wrote: > Many number of false radar detection occurred in a noisy > environment in QCA4019, QCA9888 devices. By reducing > PRI_TOLERANCE to 6 and flushing out pulse queue by dpd_reset > if timestamp between current and previous pulse is lesser than > 100ms helps to avoid/reduce this false radar detection > in the noisy environment. > > Tested ath10k hw and fw: > * QCA9888(10.4-3.5.1-00052) > * QCA4019(10.4-3.2.1.1-00017) > * QCA9984(10.4-3.6-00104) > * QCA988X(10.2.4-1.0-00041) > > Tested ath9k hw: AR9300 Please post the radar detection rate results before and after this change. Especially for ETSI at 30% channel load. > Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org> > --- > drivers/net/wireless/ath/ath.h | 2 ++ > drivers/net/wireless/ath/ath10k/mac.c | 4 ++++ > drivers/net/wireless/ath/ath9k/init.c | 1 + > drivers/net/wireless/ath/dfs_pattern_detector.c | 4 +++- > drivers/net/wireless/ath/dfs_pattern_detector.h | 2 +- > 5 files changed, 11 insertions(+), 2 deletions(-) > > diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h > index 7a364ec..2bf2d0c 100644 > --- a/drivers/net/wireless/ath/ath.h > +++ b/drivers/net/wireless/ath/ath.h > @@ -184,6 +184,8 @@ struct ath_common { > > int last_rssi; > struct ieee80211_supported_band sbands[NUM_NL80211_BANDS]; > + > + int dfs_pulse_valid_diff_ts; > }; > > static inline const struct ath_ps_ops *ath_ps_ops(struct ath_common *common) > diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c > index a1c2801..c93b81c 100644 > --- a/drivers/net/wireless/ath/ath10k/mac.c > +++ b/drivers/net/wireless/ath/ath10k/mac.c > @@ -8275,6 +8275,8 @@ struct ath10k_vif *ath10k_get_arvif(struct ath10k *ar, u32 vdev_id) > #define WRD_METHOD "WRDD" > #define WRDD_WIFI (0x07) > > +#define ATH10K_DFS_PULSE_VALID_DIFF_TS 100 > + > static u32 ath10k_mac_wrdd_get_mcc(struct ath10k *ar, union acpi_object *wrdd) > { > union acpi_object *mcc_pkg; > @@ -8642,6 +8644,8 @@ int ath10k_mac_register(struct ath10k *ar) > if (IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED)) { > /* Init ath dfs pattern detector */ > ar->ath_common.debug_mask = ATH_DBG_DFS; > + ar->ath_common.dfs_pulse_valid_diff_ts = > + ATH10K_DFS_PULSE_VALID_DIFF_TS; > ar->dfs_detector = dfs_pattern_detector_init(&ar->ath_common, > NL80211_DFS_UNSET); > > diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c > index c070a9e..7ea4460 100644 > --- a/drivers/net/wireless/ath/ath9k/init.c > +++ b/drivers/net/wireless/ath/ath9k/init.c > @@ -696,6 +696,7 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc, > common->debug_mask = ath9k_debug; > common->btcoex_enabled = ath9k_btcoex_enable == 1; > common->disable_ani = false; > + common->dfs_pulse_valid_diff_ts = 0; Why it's 0 here while ath10k is using 100us? > > /* > * Platform quirks. > diff --git a/drivers/net/wireless/ath/dfs_pattern_detector.c b/drivers/net/wireless/ath/dfs_pattern_detector.c > index d52b31b..3dbf0ab 100644 > --- a/drivers/net/wireless/ath/dfs_pattern_detector.c > +++ b/drivers/net/wireless/ath/dfs_pattern_detector.c > @@ -273,6 +273,7 @@ static void dpd_exit(struct dfs_pattern_detector *dpd) > { > u32 i; > struct channel_detector *cd; > + int diff_ts; > > /* > * pulses received for a non-supported or un-initialized > @@ -285,8 +286,9 @@ static void dpd_exit(struct dfs_pattern_detector *dpd) > if (cd == NULL) > return false; > > + diff_ts = event->ts - dpd->last_pulse_ts; > /* reset detector on time stamp wraparound, caused by TSF reset */ > - if (event->ts < dpd->last_pulse_ts) > + if (diff_ts < dpd->common->dfs_pulse_valid_diff_ts) This is only valid when 1 radar pattern detected at a time. But there are many locations that overlapped with multiple radar equipment. How this change handles if 2 different radars detected at the same time? Check out the radar operation center deployed. https://www.roc.noaa.gov/WSR88D/Maps.aspx > dpd_reset(dpd); > dpd->last_pulse_ts = event->ts; > > diff --git a/drivers/net/wireless/ath/dfs_pattern_detector.h b/drivers/net/wireless/ath/dfs_pattern_detector.h > index 18db6f4..6f419d4 100644 > --- a/drivers/net/wireless/ath/dfs_pattern_detector.h > +++ b/drivers/net/wireless/ath/dfs_pattern_detector.h > @@ -24,7 +24,7 @@ > /* tolerated deviation of radar time stamp in usecs on both sides > * TODO: this might need to be HW-dependent > */ > -#define PRI_TOLERANCE 16 > +#define PRI_TOLERANCE 6 What is this number 6 come from? Thanks, Peter
Peter Oh <peter.oh@bowerswilkins.com> writes: > On 10/14/2018 10:07 PM, Tamizh chelvam wrote: >> Many number of false radar detection occurred in a noisy >> environment in QCA4019, QCA9888 devices. By reducing >> PRI_TOLERANCE to 6 and flushing out pulse queue by dpd_reset >> if timestamp between current and previous pulse is lesser than >> 100ms helps to avoid/reduce this false radar detection >> in the noisy environment. >> >> Tested ath10k hw and fw: >> * QCA9888(10.4-3.5.1-00052) >> * QCA4019(10.4-3.2.1.1-00017) >> * QCA9984(10.4-3.6-00104) >> * QCA988X(10.2.4-1.0-00041) >> >> Tested ath9k hw: AR9300 > > Please post the radar detection rate results before and after this change. > Especially for ETSI at 30% channel load. > >> Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org> >> --- >> drivers/net/wireless/ath/ath.h | 2 ++ >> drivers/net/wireless/ath/ath10k/mac.c | 4 ++++ >> drivers/net/wireless/ath/ath9k/init.c | 1 + >> drivers/net/wireless/ath/dfs_pattern_detector.c | 4 +++- >> drivers/net/wireless/ath/dfs_pattern_detector.h | 2 +- >> 5 files changed, 11 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h >> index 7a364ec..2bf2d0c 100644 >> --- a/drivers/net/wireless/ath/ath.h >> +++ b/drivers/net/wireless/ath/ath.h >> @@ -184,6 +184,8 @@ struct ath_common { >> >> int last_rssi; >> struct ieee80211_supported_band sbands[NUM_NL80211_BANDS]; >> + >> + int dfs_pulse_valid_diff_ts; >> }; >> >> static inline const struct ath_ps_ops *ath_ps_ops(struct ath_common *common) >> diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c >> index a1c2801..c93b81c 100644 >> --- a/drivers/net/wireless/ath/ath10k/mac.c >> +++ b/drivers/net/wireless/ath/ath10k/mac.c >> @@ -8275,6 +8275,8 @@ struct ath10k_vif *ath10k_get_arvif(struct ath10k *ar, u32 vdev_id) >> #define WRD_METHOD "WRDD" >> #define WRDD_WIFI (0x07) >> >> +#define ATH10K_DFS_PULSE_VALID_DIFF_TS 100 >> + >> static u32 ath10k_mac_wrdd_get_mcc(struct ath10k *ar, union acpi_object *wrdd) >> { >> union acpi_object *mcc_pkg; >> @@ -8642,6 +8644,8 @@ int ath10k_mac_register(struct ath10k *ar) >> if (IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED)) { >> /* Init ath dfs pattern detector */ >> ar->ath_common.debug_mask = ATH_DBG_DFS; >> + ar->ath_common.dfs_pulse_valid_diff_ts = >> + ATH10K_DFS_PULSE_VALID_DIFF_TS; >> ar->dfs_detector = dfs_pattern_detector_init(&ar->ath_common, >> NL80211_DFS_UNSET); >> >> diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c >> index c070a9e..7ea4460 100644 >> --- a/drivers/net/wireless/ath/ath9k/init.c >> +++ b/drivers/net/wireless/ath/ath9k/init.c >> @@ -696,6 +696,7 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc, >> common->debug_mask = ath9k_debug; >> common->btcoex_enabled = ath9k_btcoex_enable == 1; >> common->disable_ani = false; >> + common->dfs_pulse_valid_diff_ts = 0; > > Why it's 0 here while ath10k is using 100us? Tamizh, please reply to Peter's comments. I'll drop this patch now, please resubmit once you have reached a conclusion in the discussion.
diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h index 7a364ec..2bf2d0c 100644 --- a/drivers/net/wireless/ath/ath.h +++ b/drivers/net/wireless/ath/ath.h @@ -184,6 +184,8 @@ struct ath_common { int last_rssi; struct ieee80211_supported_band sbands[NUM_NL80211_BANDS]; + + int dfs_pulse_valid_diff_ts; }; static inline const struct ath_ps_ops *ath_ps_ops(struct ath_common *common) diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index a1c2801..c93b81c 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -8275,6 +8275,8 @@ struct ath10k_vif *ath10k_get_arvif(struct ath10k *ar, u32 vdev_id) #define WRD_METHOD "WRDD" #define WRDD_WIFI (0x07) +#define ATH10K_DFS_PULSE_VALID_DIFF_TS 100 + static u32 ath10k_mac_wrdd_get_mcc(struct ath10k *ar, union acpi_object *wrdd) { union acpi_object *mcc_pkg; @@ -8642,6 +8644,8 @@ int ath10k_mac_register(struct ath10k *ar) if (IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED)) { /* Init ath dfs pattern detector */ ar->ath_common.debug_mask = ATH_DBG_DFS; + ar->ath_common.dfs_pulse_valid_diff_ts = + ATH10K_DFS_PULSE_VALID_DIFF_TS; ar->dfs_detector = dfs_pattern_detector_init(&ar->ath_common, NL80211_DFS_UNSET); diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c index c070a9e..7ea4460 100644 --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -696,6 +696,7 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc, common->debug_mask = ath9k_debug; common->btcoex_enabled = ath9k_btcoex_enable == 1; common->disable_ani = false; + common->dfs_pulse_valid_diff_ts = 0; /* * Platform quirks. diff --git a/drivers/net/wireless/ath/dfs_pattern_detector.c b/drivers/net/wireless/ath/dfs_pattern_detector.c index d52b31b..3dbf0ab 100644 --- a/drivers/net/wireless/ath/dfs_pattern_detector.c +++ b/drivers/net/wireless/ath/dfs_pattern_detector.c @@ -273,6 +273,7 @@ static void dpd_exit(struct dfs_pattern_detector *dpd) { u32 i; struct channel_detector *cd; + int diff_ts; /* * pulses received for a non-supported or un-initialized @@ -285,8 +286,9 @@ static void dpd_exit(struct dfs_pattern_detector *dpd) if (cd == NULL) return false; + diff_ts = event->ts - dpd->last_pulse_ts; /* reset detector on time stamp wraparound, caused by TSF reset */ - if (event->ts < dpd->last_pulse_ts) + if (diff_ts < dpd->common->dfs_pulse_valid_diff_ts) dpd_reset(dpd); dpd->last_pulse_ts = event->ts; diff --git a/drivers/net/wireless/ath/dfs_pattern_detector.h b/drivers/net/wireless/ath/dfs_pattern_detector.h index 18db6f4..6f419d4 100644 --- a/drivers/net/wireless/ath/dfs_pattern_detector.h +++ b/drivers/net/wireless/ath/dfs_pattern_detector.h @@ -24,7 +24,7 @@ /* tolerated deviation of radar time stamp in usecs on both sides * TODO: this might need to be HW-dependent */ -#define PRI_TOLERANCE 16 +#define PRI_TOLERANCE 6 /** * struct ath_dfs_pool_stats - DFS Statistics for global pools
Many number of false radar detection occurred in a noisy environment in QCA4019, QCA9888 devices. By reducing PRI_TOLERANCE to 6 and flushing out pulse queue by dpd_reset if timestamp between current and previous pulse is lesser than 100ms helps to avoid/reduce this false radar detection in the noisy environment. Tested ath10k hw and fw: * QCA9888(10.4-3.5.1-00052) * QCA4019(10.4-3.2.1.1-00017) * QCA9984(10.4-3.6-00104) * QCA988X(10.2.4-1.0-00041) Tested ath9k hw: AR9300 Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org> --- drivers/net/wireless/ath/ath.h | 2 ++ drivers/net/wireless/ath/ath10k/mac.c | 4 ++++ drivers/net/wireless/ath/ath9k/init.c | 1 + drivers/net/wireless/ath/dfs_pattern_detector.c | 4 +++- drivers/net/wireless/ath/dfs_pattern_detector.h | 2 +- 5 files changed, 11 insertions(+), 2 deletions(-)