[PATCH 3/8] wifi: ath12k: add primary link for data path operations

[Kalle Valo]

From: Sriram R <quic_srirrama at quicinc.com>

In case of Multi-link operation, data path peer setup and tid setup should be
done only for primary link of multi-link station. Add changes to introduce
primary link is peer. Currently, association link will be considered as primary
link.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-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 at quicinc.com>
Signed-off-by: Harshitha Prem <quic_hprem at quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo at quicinc.com>
---
 drivers/net/wireless/ath/ath12k/dp.c    |  5 +++++
 drivers/net/wireless/ath/ath12k/dp_rx.c | 10 ++++++++++
 drivers/net/wireless/ath/ath12k/peer.c  | 23 +++++++++++++++++++++++
 drivers/net/wireless/ath/ath12k/peer.h  |  8 ++++++++
 4 files changed, 46 insertions(+)

diff --git a/drivers/net/wireless/ath/ath12k/dp.c b/drivers/net/wireless/ath/ath12k/dp.c
index c99e9ceb1a6e..23326e2dfe8d 100644
--- a/drivers/net/wireless/ath/ath12k/dp.c
+++ b/drivers/net/wireless/ath/ath12k/dp.c
@@ -41,6 +41,11 @@ void ath12k_dp_peer_cleanup(struct ath12k *ar, int vdev_id, const u8 *addr)
 		return;
 	}
 
+	if (!peer->primary_link) {
+		spin_unlock_bh(&ab->base_lock);
+		return;
+	}
+
 	ath12k_dp_rx_peer_tid_cleanup(ar, peer);
 	crypto_free_shash(peer->tfm_mmic);
 	peer->dp_setup_done = false;
diff --git a/drivers/net/wireless/ath/ath12k/dp_rx.c b/drivers/net/wireless/ath/ath12k/dp_rx.c
index 9ae579e50557..048edb79e993 100644
--- a/drivers/net/wireless/ath/ath12k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath12k/dp_rx.c
@@ -940,6 +940,11 @@ int ath12k_dp_rx_peer_tid_setup(struct ath12k *ar, const u8 *peer_mac, int vdev_
 		return -ENOENT;
 	}
 
+	if (!peer->primary_link) {
+		spin_unlock_bh(&ab->base_lock);
+		return 0;
+	}
+
 	if (ab->hw_params->reoq_lut_support && !dp->reoq_lut.vaddr) {
 		spin_unlock_bh(&ab->base_lock);
 		ath12k_warn(ab, "reo qref table is not setup\n");
@@ -2781,6 +2786,11 @@ int ath12k_dp_rx_peer_frag_setup(struct ath12k *ar, const u8 *peer_mac, int vdev
 		return -ENOENT;
 	}
 
+	if (!peer->primary_link) {
+		spin_unlock_bh(&ab->base_lock);
+		return 0;
+	}
+
 	for (i = 0; i <= IEEE80211_NUM_TIDS; i++) {
 		rx_tid = &peer->rx_tid[i];
 		rx_tid->ab = ab;
diff --git a/drivers/net/wireless/ath/ath12k/peer.c b/drivers/net/wireless/ath/ath12k/peer.c
index 50e0d3d90bf6..b6d6a2983d09 100644
--- a/drivers/net/wireless/ath/ath12k/peer.c
+++ b/drivers/net/wireless/ath/ath12k/peer.c
@@ -313,7 +313,11 @@ int ath12k_peer_create(struct ath12k *ar, struct ath12k_link_vif *arvif,
 		       struct ath12k_wmi_peer_create_arg *arg)
 {
 	struct ieee80211_vif *vif = ath12k_ahvif_to_vif(arvif->ahvif);
+	struct ath12k_link_sta *arsta;
+	u8 link_id = arvif->link_id;
 	struct ath12k_peer *peer;
+	struct ath12k_sta *ahsta;
+	u16 ml_peer_id;
 	int ret;
 
 	lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
@@ -379,6 +383,25 @@ int ath12k_peer_create(struct ath12k *ar, struct ath12k_link_vif *arvif,
 		arvif->ast_idx = peer->hw_peer_id;
 	}
 
+	if (sta) {
+		ahsta = ath12k_sta_to_ahsta(sta);
+		arsta = wiphy_dereference(ath12k_ar_to_hw(ar)->wiphy,
+					  ahsta->link[link_id]);
+
+		/* Fill ML info into created peer */
+		if (sta->mlo) {
+			ml_peer_id = ahsta->ml_peer_id;
+			peer->ml_id = ml_peer_id | ATH12K_PEER_ML_ID_VALID;
+			ether_addr_copy(peer->ml_addr, sta->addr);
+
+			/* the assoc link is considered primary for now */
+			peer->primary_link = arsta->is_assoc_link;
+		} else {
+			peer->ml_id = ATH12K_MLO_PEER_ID_INVALID;
+			peer->primary_link = true;
+		}
+	}
+
 	peer->sec_type = HAL_ENCRYPT_TYPE_OPEN;
 	peer->sec_type_grp = HAL_ENCRYPT_TYPE_OPEN;
 
diff --git a/drivers/net/wireless/ath/ath12k/peer.h b/drivers/net/wireless/ath/ath12k/peer.h
index e398d5a3fdc8..a39e943bd66b 100644
--- a/drivers/net/wireless/ath/ath12k/peer.h
+++ b/drivers/net/wireless/ath/ath12k/peer.h
@@ -51,6 +51,14 @@ struct ath12k_peer {
 	bool dp_setup_done;
 
 	u16 ml_id;
+
+	/* any other ML info common for all partners can be added
+	 * here and would be same for all partner peers.
+	 */
+	u8 ml_addr[ETH_ALEN];
+
+	/* To ensure only certain work related to dp is done once */
+	bool primary_link;
 };
 
 struct ath12k_ml_peer {
-- 
2.39.5