wifi: ath12k: fill link station statistics for MLO

Introduce ath12k_mac_op_link_sta_statistics(), to report link level
station statistics for MLO. The link_station_info structure is filled
from arsta and arsta is fetch from corresponding ahsta->link[link_id].

Therefore, this will be helpful to check the link related statistics.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1

Signed-off-by: Sarika Sharma <quic_sarishar@quicinc.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250701105927.803342-2-quic_sarishar@quicinc.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>

1 files changed, 78 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 6dd4441ce9a0..8fcfb374fc86 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -12444,6 +12444,83 @@ static void ath12k_mac_op_sta_statistics(struct ieee80211_hw *hw,
 	sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG);
 }
 
+static void ath12k_mac_op_link_sta_statistics(struct ieee80211_hw *hw,
+					      struct ieee80211_vif *vif,
+					      struct ieee80211_link_sta *link_sta,
+					      struct link_station_info *link_sinfo)
+{
+	struct ath12k_sta *ahsta = ath12k_sta_to_ahsta(link_sta->sta);
+	struct ath12k_fw_stats_req_params params = {};
+	struct ath12k_link_sta *arsta;
+	struct ath12k *ar;
+	s8 signal;
+	bool db2dbm;
+
+	lockdep_assert_wiphy(hw->wiphy);
+
+	arsta = wiphy_dereference(hw->wiphy, ahsta->link[link_sta->link_id]);
+
+	if (!arsta)
+		return;
+
+	ar = ath12k_get_ar_by_vif(hw, vif, arsta->link_id);
+	if (!ar)
+		return;
+
+	db2dbm = test_bit(WMI_TLV_SERVICE_HW_DB2DBM_CONVERSION_SUPPORT,
+			  ar->ab->wmi_ab.svc_map);
+
+	link_sinfo->rx_duration = arsta->rx_duration;
+	link_sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_DURATION);
+
+	link_sinfo->tx_duration = arsta->tx_duration;
+	link_sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_DURATION);
+
+	if (arsta->txrate.legacy || arsta->txrate.nss) {
+		if (arsta->txrate.legacy) {
+			link_sinfo->txrate.legacy = arsta->txrate.legacy;
+		} else {
+			link_sinfo->txrate.mcs = arsta->txrate.mcs;
+			link_sinfo->txrate.nss = arsta->txrate.nss;
+			link_sinfo->txrate.bw = arsta->txrate.bw;
+			link_sinfo->txrate.he_gi = arsta->txrate.he_gi;
+			link_sinfo->txrate.he_dcm = arsta->txrate.he_dcm;
+			link_sinfo->txrate.he_ru_alloc =
+				arsta->txrate.he_ru_alloc;
+			link_sinfo->txrate.eht_gi = arsta->txrate.eht_gi;
+			link_sinfo->txrate.eht_ru_alloc =
+				arsta->txrate.eht_ru_alloc;
+		}
+		link_sinfo->txrate.flags = arsta->txrate.flags;
+		link_sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
+	}
+
+	/* TODO: Use real NF instead of default one. */
+	signal = arsta->rssi_comb;
+
+	params.pdev_id = ar->pdev->pdev_id;
+	params.vdev_id = 0;
+	params.stats_id = WMI_REQUEST_VDEV_STAT;
+
+	if (!signal &&
+	    ahsta->ahvif->vdev_type == WMI_VDEV_TYPE_STA &&
+	    !(ath12k_mac_get_fw_stats(ar, &params)))
+		signal = arsta->rssi_beacon;
+
+	if (signal) {
+		link_sinfo->signal =
+			db2dbm ? signal : signal + ATH12K_DEFAULT_NOISE_FLOOR;
+		link_sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
+	}
+
+	link_sinfo->signal_avg = ewma_avg_rssi_read(&arsta->avg_rssi);
+
+	if (!db2dbm)
+		link_sinfo->signal_avg += ATH12K_DEFAULT_NOISE_FLOOR;
+
+	link_sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG);
+}
+
 static int ath12k_mac_op_cancel_remain_on_channel(struct ieee80211_hw *hw,
 						  struct ieee80211_vif *vif)
 {
@@ -12679,6 +12756,7 @@ static const struct ieee80211_ops ath12k_ops = {
 	.get_survey			= ath12k_mac_op_get_survey,
 	.flush				= ath12k_mac_op_flush,
 	.sta_statistics			= ath12k_mac_op_sta_statistics,
+	.link_sta_statistics		= ath12k_mac_op_link_sta_statistics,
 	.remain_on_channel              = ath12k_mac_op_remain_on_channel,
 	.cancel_remain_on_channel       = ath12k_mac_op_cancel_remain_on_channel,
 	.change_sta_links               = ath12k_mac_op_change_sta_links,