This reports signal strength of ACK packets from the peer as measured
at each interface.
Tested-by: Shurong Wen <shurong.wen@xxxxxxxxxxxx>
Signed-off-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mac80211.c | 9 ++++-----
drivers/net/wireless/mediatek/mt76/mt76.h | 1 +
.../net/wireless/mediatek/mt76/mt7915/init.c | 7 +++++++
.../net/wireless/mediatek/mt76/mt7915/mac.c | 19 ++++++++++++++++++-
.../net/wireless/mediatek/mt76/mt7915/main.c | 8 ++++++++
.../wireless/mediatek/mt76/mt7915/mt7915.h | 6 +++++-
.../net/wireless/mediatek/mt76/mt7915/regs.h | 8 ++++++++
7 files changed, 51 insertions(+), 7 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index 4bdbfd0f6233..c59d12004459 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -951,14 +951,12 @@ void mt76_wcid_key_setup(struct mt76_dev *dev, struct mt76_wcid *wcid,
}
EXPORT_SYMBOL(mt76_wcid_key_setup);
-static int
-mt76_rx_signal(struct mt76_rx_status *status)
+int mt76_rx_signal(u8 chain_mask, s8 *chain_signal)
{
- s8 *chain_signal = status->chain_signal;
int signal = -128;
u8 chains;
- for (chains = status->chains; chains; chains >>= 1, chain_signal++) {
+ for (chains = chain_mask; chains; chains >>= 1, chain_signal++) {
int cur, diff;
cur = *chain_signal;
@@ -980,6 +978,7 @@ mt76_rx_signal(struct mt76_rx_status *status)
return signal;
}
+EXPORT_SYMBOL(mt76_rx_signal);
static void
mt76_rx_convert(struct mt76_dev *dev, struct sk_buff *skb,
@@ -1009,7 +1008,7 @@ mt76_rx_convert(struct mt76_dev *dev, struct sk_buff *skb,
status->ampdu_reference = mstat.ampdu_ref;
status->device_timestamp = mstat.timestamp;
status->mactime = mstat.timestamp;
- status->signal = mt76_rx_signal(&mstat);
+ status->signal = mt76_rx_signal(mstat.chains, mstat.chain_signal);
if (status->signal <= -128)
status->flag |= RX_FLAG_NO_SIGNAL_VAL;
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index f9bdf16fc6c4..c91fb9bde632 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -1149,6 +1149,7 @@ void mt76_update_survey(struct mt76_phy *phy);
void mt76_update_survey_active_time(struct mt76_phy *phy, ktime_t time);
int mt76_get_survey(struct ieee80211_hw *hw, int idx,
struct survey_info *survey);
+int mt76_rx_signal(u8 chain_mask, s8 *chain_signal);
void mt76_set_stream_caps(struct mt76_phy *phy, bool vht);
int mt76_rx_aggr_start(struct mt76_dev *dev, struct mt76_wcid *wcid, u8 tid,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index 7173ed964519..0e7d065afe29 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
@@ -353,6 +353,7 @@ mt7915_init_wiphy(struct ieee80211_hw *hw)
wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_HE);
wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP);
wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_DISCOVERY);
+ wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT);
if (!mdev->dev->of_node ||
!of_property_read_bool(mdev->dev->of_node,
@@ -461,6 +462,12 @@ mt7915_mac_init_band(struct mt7915_dev *dev, u8 band)
set = FIELD_PREP(MT_WF_RMAC_MIB_OBSS_BACKOFF, 0) |
FIELD_PREP(MT_WF_RMAC_MIB_ED_OFFSET, 4);
mt76_rmw(dev, MT_WF_RMAC_MIB_AIRTIME0(band), mask, set);
+
+ /* filter out non-resp frames and get instanstaeous signal reporting */
+ mask = MT_WTBLOFF_TOP_RSCR_RCPI_MODE | MT_WTBLOFF_TOP_RSCR_RCPI_PARAM;
+ set = FIELD_PREP(MT_WTBLOFF_TOP_RSCR_RCPI_MODE, 0) |
+ FIELD_PREP(MT_WTBLOFF_TOP_RSCR_RCPI_PARAM, 0x3);
+ mt76_rmw(dev, MT_WTBLOFF_TOP_RSCR(band), mask, set);
}
static void mt7915_mac_init(struct mt7915_dev *dev)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index 34a50d594372..1ce2b91353e7 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -9,7 +9,7 @@
#include "mac.h"
#include "mcu.h"
-#define to_rssi(field, rxv) ((FIELD_GET(field, rxv) - 220) / 2)
+#define to_rssi(field, rcpi) ((FIELD_GET(field, rcpi) - 220) / 2)
static const struct mt7915_dfs_radar_spec etsi_radar_specs = {
.pulse_th = { 110, -10, -80, 40, 5200, 128, 5200 },
@@ -119,6 +119,7 @@ static void mt7915_mac_sta_poll(struct mt7915_dev *dev)
bool clear = false;
u32 addr, val;
u16 idx;
+ s8 rssi[4];
u8 bw;
spin_lock_bh(&dev->sta_poll_lock);
@@ -132,6 +133,8 @@ static void mt7915_mac_sta_poll(struct mt7915_dev *dev)
spin_unlock_bh(&dev->sta_poll_lock);
idx = msta->wcid.idx;
+
+ /* refresh peer's airtime reporting */
addr = mt7915_mac_wtbl_lmac_addr(dev, idx, 20);
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
@@ -210,6 +213,20 @@ static void mt7915_mac_sta_poll(struct mt7915_dev *dev)
else
rate->flags &= ~RATE_INFO_FLAGS_SHORT_GI;
}
+
+ /* get signal strength of resp frames (CTS/BA/ACK) */
+ addr = mt7915_mac_wtbl_lmac_addr(dev, idx, 30);
+ val = mt76_rr(dev, addr);
+
+ rssi[0] = to_rssi(GENMASK(7, 0), val);
+ rssi[1] = to_rssi(GENMASK(15, 8), val);
+ rssi[2] = to_rssi(GENMASK(23, 16), val);
+ rssi[3] = to_rssi(GENMASK(31, 14), val);
+
+ msta->ack_signal =
+ mt76_rx_signal(msta->vif->phy->mt76->antenna_mask, rssi);
+
+ ewma_avg_signal_add(&msta->avg_ack_signal, -msta->ack_signal);
}
rcu_read_unlock();
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
index 6de49b93387e..ac320182c2ce 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
@@ -665,6 +665,8 @@ int mt7915_mac_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
msta->wcid.tx_info |= MT_WCID_TX_INFO_SET;
msta->jiffies = jiffies;
+ ewma_avg_signal_init(&msta->avg_ack_signal);
+
mt7915_mac_wtbl_update(dev, idx,
MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
@@ -1025,6 +1027,12 @@ static void mt7915_sta_statistics(struct ieee80211_hw *hw,
sinfo->tx_retries = msta->wcid.stats.tx_retries;
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_RETRIES);
}
+
+ sinfo->ack_signal = (s8)msta->ack_signal;
+ sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL);
+
+ sinfo->avg_ack_signal = -(s8)ewma_avg_signal_read(&msta->avg_ack_signal);
+ sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG);
}
static void mt7915_sta_rc_work(void *data, struct ieee80211_sta *sta)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
index 5e95f5c77933..b0b57ee1e00f 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
@@ -114,6 +114,8 @@ struct mt7915_twt_flow {
u8 sched:1;
};
+DECLARE_EWMA(avg_signal, 10, 8)
+
struct mt7915_sta {
struct mt76_wcid wcid; /* must be first */
@@ -123,10 +125,12 @@ struct mt7915_sta {
struct list_head rc_list;
u32 airtime_ac[8];
+ int ack_signal;
+ struct ewma_avg_signal avg_ack_signal;
+
unsigned long changed;
unsigned long jiffies;
unsigned long ampdu_state;
-
struct mt76_connac_sta_key_conf bip;
struct {
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
index 7db809671230..9924271d8e36 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
@@ -226,6 +226,14 @@ enum offs_rev {
#define MT_DMA_DCR0_MAX_RX_LEN GENMASK(15, 3)
#define MT_DMA_DCR0_RXD_G5_EN BIT(23)
+/* WTBLOFF TOP: band 0(0x820e9000),band 1(0x820f9000) */
+#define MT_WTBLOFF_TOP_BASE(_band) ((_band) ? 0x820f9000 : 0x820e9000)
+#define MT_WTBLOFF_TOP(_band, ofs) (MT_WTBLOFF_TOP_BASE(_band) + (ofs))
+
+#define MT_WTBLOFF_TOP_RSCR(_band) MT_WTBLOFF_TOP(_band, 0x008)
+#define MT_WTBLOFF_TOP_RSCR_RCPI_MODE GENMASK(31, 30)
+#define MT_WTBLOFF_TOP_RSCR_RCPI_PARAM GENMASK(25, 24)
+
/* ETBF: band 0(0x820ea000), band 1(0x820fa000) */
#define MT_WF_ETBF_BASE(_band) ((_band) ? 0x820fa000 : 0x820ea000)
#define MT_WF_ETBF(_band, ofs) (MT_WF_ETBF_BASE(_band) + (ofs))
--
2.36.1
