Received-SPF: pass (google.com: domain of linux-wireless+bounces-5251-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1;
From: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
To: <ath12k@lists.infradead.org>
CC: <linux-wireless@vger.kernel.org>,
        Pradeep Kumar Chitrapu
	<quic_pradeepc@quicinc.com>,
        Avula Sri Charan <quic_asrichar@quicinc.com>
Subject: [PATCH 4/6] wifi: ath12k: add 6 GHz params in peer assoc command
Date: Mon, 25 Mar 2024 14:23:02 -0700
Message-ID: <20240325212304.28241-5-quic_pradeepc@quicinc.com>
In-Reply-To: <20240325212304.28241-1-quic_pradeepc@quicinc.com>
References: <20240325212304.28241-1-quic_pradeepc@quicinc.com>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain

Currently A-MPDU aggregation parameters are not being configured
during peer association for 6 GHz band. Hence, extract these
parameters from station's capabilities received in association
request and send to firmware. Without this, A-MPDU aggregation
is not happening in 6 GHz band.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Co-developed-by: Avula Sri Charan <quic_asrichar@quicinc.com>
Signed-off-by: Avula Sri Charan <quic_asrichar@quicinc.com>
Signed-off-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/mac.c | 56 ++++++++++++++++++++++++++-
 1 file changed, 55 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 6d7df18ec424..7e296140439a 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -1910,6 +1910,59 @@ static void ath12k_peer_assoc_h_he(struct ath12k *ar,
 	}
 }
 
+static void ath12k_peer_assoc_h_he_6ghz(struct ath12k *ar,
+					struct ieee80211_vif *vif,
+					struct ieee80211_sta *sta,
+					struct ath12k_wmi_peer_assoc_arg *arg)
+{
+	const struct ieee80211_sta_he_cap *he_cap = &sta->deflink.he_cap;
+	struct cfg80211_chan_def def;
+	enum nl80211_band band;
+	u8  ampdu_factor;
+
+	if (WARN_ON(ath12k_mac_vif_chan(vif, &def)))
+		return;
+
+	band = def.chan->band;
+
+	if (!arg->he_flag || band != NL80211_BAND_6GHZ || !sta->deflink.he_6ghz_capa.capa)
+		return;
+
+	if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_40)
+		arg->bw_40 = true;
+
+	if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_80)
+		arg->bw_80 = true;
+
+	if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_160)
+		arg->bw_160 = true;
+
+	if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_320)
+		arg->bw_320 = true;
+
+	arg->peer_he_caps_6ghz = le16_to_cpu(sta->deflink.he_6ghz_capa.capa);
+	arg->peer_mpdu_density =
+		ath12k_parse_mpdudensity(u32_get_bits(arg->peer_he_caps_6ghz,
+						      IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START));
+
+	/* From IEEE Std 802.11ax-2021 - Section 10.12.2: An HE STA shall be capable of
+	 * receiving A-MPDU where the A-MPDU pre-EOF padding length is up to the value
+	 * indicated by the Maximum A-MPDU Length Exponent Extension field in the HE
+	 * Capabilities element and the Maximum A-MPDU Length Exponent field in HE 6 GHz
+	 * Band Capabilities element in the 6 GHz band.
+	 *
+	 * Here, we are extracting the Max A-MPDU Exponent Extension from HE caps and
+	 * factor is the Maximum A-MPDU Length Exponent from HE 6 GHZ Band capability.
+	 */
+	ampdu_factor = u8_get_bits(he_cap->he_cap_elem.mac_cap_info[3],
+				   IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK) +
+			u32_get_bits(arg->peer_he_caps_6ghz,
+				     IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP);
+
+	arg->peer_max_mpdu = (1u << (IEEE80211_HE_6GHZ_MAX_AMPDU_FACTOR +
+				     ampdu_factor)) - 1;
+}
+
 static void ath12k_peer_assoc_h_smps(struct ieee80211_sta *sta,
 				     struct ath12k_wmi_peer_assoc_arg *arg)
 {
@@ -2382,6 +2435,7 @@ static void ath12k_peer_assoc_prepare(struct ath12k *ar,
 	ath12k_peer_assoc_h_ht(ar, vif, sta, arg);
 	ath12k_peer_assoc_h_vht(ar, vif, sta, arg);
 	ath12k_peer_assoc_h_he(ar, vif, sta, arg);
+	ath12k_peer_assoc_h_he_6ghz(ar, vif, sta, arg);
 	ath12k_peer_assoc_h_eht(ar, vif, sta, arg);
 	ath12k_peer_assoc_h_qos(ar, vif, sta, arg);
 	ath12k_peer_assoc_h_phymode(ar, vif, sta, arg);
@@ -8029,7 +8083,7 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah)
 	ieee80211_hw_set(hw, SUPPORTS_TX_FRAG);
 	ieee80211_hw_set(hw, REPORTS_LOW_ACK);
 
-	if (ht_cap & WMI_HT_CAP_ENABLED) {
+	if ((ht_cap & WMI_HT_CAP_ENABLED) || ar->supports_6ghz) {
 		ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 		ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
 		ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
-- 
2.17.1