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[PATCH v2 7/8] wifi: ath12k: add helper to find multi-link station

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From: Sriram R <quic_srirrama@xxxxxxxxxxx>

Multi-link stations are identified in driver using the multi-link
peer id and they have ATH12K_PEER_ML_ID_VALID bit set in the id. Add a helper
to find multi-link station using the multi-link peer id.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: Sriram R <quic_srirrama@xxxxxxxxxxx>
Signed-off-by: Harshitha Prem <quic_hprem@xxxxxxxxxxx>
Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx>
---
 drivers/net/wireless/ath/ath12k/peer.c | 17 +++++++++++++++++
 drivers/net/wireless/ath/ath12k/peer.h |  4 ++++
 2 files changed, 21 insertions(+)

diff --git a/drivers/net/wireless/ath/ath12k/peer.c b/drivers/net/wireless/ath/ath12k/peer.c
index 2ad19baf0664..0e86847edd6e 100644
--- a/drivers/net/wireless/ath/ath12k/peer.c
+++ b/drivers/net/wireless/ath/ath12k/peer.c
@@ -79,6 +79,20 @@ struct ath12k_peer *ath12k_peer_find_by_addr(struct ath12k_base *ab,
 	return NULL;
 }
 
+static struct ath12k_peer *ath12k_peer_find_by_ml_id(struct ath12k_base *ab,
+						     int ml_peer_id)
+{
+	struct ath12k_peer *peer;
+
+	lockdep_assert_held(&ab->base_lock);
+
+	list_for_each_entry(peer, &ab->peers, list)
+		if (ml_peer_id == peer->ml_id)
+			return peer;
+
+	return NULL;
+}
+
 struct ath12k_peer *ath12k_peer_find_by_id(struct ath12k_base *ab,
 					   int peer_id)
 {
@@ -86,6 +100,9 @@ struct ath12k_peer *ath12k_peer_find_by_id(struct ath12k_base *ab,
 
 	lockdep_assert_held(&ab->base_lock);
 
+	if (peer_id & ATH12K_PEER_ML_ID_VALID)
+		return ath12k_peer_find_by_ml_id(ab, peer_id);
+
 	list_for_each_entry(peer, &ab->peers, list)
 		if (peer_id == peer->peer_id)
 			return peer;
diff --git a/drivers/net/wireless/ath/ath12k/peer.h b/drivers/net/wireless/ath/ath12k/peer.h
index 085246ca938d..c28aca5d88a0 100644
--- a/drivers/net/wireless/ath/ath12k/peer.h
+++ b/drivers/net/wireless/ath/ath12k/peer.h
@@ -19,6 +19,8 @@ struct ppdu_user_delayba {
 	u32 resp_rate_flags;
 };
 
+#define ATH12K_PEER_ML_ID_VALID         BIT(13)
+
 struct ath12k_peer {
 	struct list_head list;
 	struct ieee80211_sta *sta;
@@ -47,6 +49,8 @@ struct ath12k_peer {
 
 	/* protected by ab->data_lock */
 	bool dp_setup_done;
+
+	u16 ml_id;
 };
 
 struct ath12k_ml_peer {
-- 
2.39.5





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