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From:   Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
To:     <ath12k@lists.infradead.org>
CC:     <linux-wireless@vger.kernel.org>,
        Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Subject: [PATCH 2/2] wifi: ath12k: avoid repeated hw access from ar
Date:   Tue, 21 Nov 2023 05:28:12 +0530
Message-ID: <20231120235812.2602198-3-quic_periyasa@quicinc.com>
In-Reply-To: <20231120235812.2602198-1-quic_periyasa@quicinc.com>
References: <20231120235812.2602198-1-quic_periyasa@quicinc.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
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Precedence: bulk

Currently, the helper functions are accessing mac80211 hw data from the
radio (ar) structure repeatedly. So optimize these helper functions by
storing mac80211 hw data locally and accessing it directly.

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

Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/mac.c | 158 +++++++++++++-------------
 drivers/net/wireless/ath/ath12k/reg.c |  13 ++-
 drivers/net/wireless/ath/ath12k/reg.h |   2 +-
 3 files changed, 90 insertions(+), 83 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index a85862ba134e..6c352c6755af 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -6258,10 +6258,11 @@ ath12k_mac_update_active_vif_chan(struct ath12k *ar,
 				  struct ieee80211_chanctx_conf *ctx)
 {
 	struct ath12k_mac_change_chanctx_arg arg = { .ctx = ctx };
+	struct ieee80211_hw *hw = ar->hw;
 
 	lockdep_assert_held(&ar->conf_mutex);
 
-	ieee80211_iterate_active_interfaces_atomic(ar->hw,
+	ieee80211_iterate_active_interfaces_atomic(hw,
 						   IEEE80211_IFACE_ITER_NORMAL,
 						   ath12k_mac_change_chanctx_cnt_iter,
 						   &arg);
@@ -6272,7 +6273,7 @@ ath12k_mac_update_active_vif_chan(struct ath12k *ar,
 	if (!arg.vifs)
 		return;
 
-	ieee80211_iterate_active_interfaces_atomic(ar->hw,
+	ieee80211_iterate_active_interfaces_atomic(hw,
 						   IEEE80211_IFACE_ITER_NORMAL,
 						   ath12k_mac_change_chanctx_fill_iter,
 						   &arg);
@@ -7151,6 +7152,7 @@ static u32 ath12k_get_phy_id(struct ath12k *ar, u32 band)
 static int ath12k_mac_setup_channels_rates(struct ath12k *ar,
 					   u32 supported_bands)
 {
+	struct ieee80211_hw *hw = ar->hw;
 	struct ieee80211_supported_band *band;
 	struct ath12k_wmi_hal_reg_capabilities_ext_arg *reg_cap;
 	void *channels;
@@ -7176,7 +7178,7 @@ static int ath12k_mac_setup_channels_rates(struct ath12k *ar,
 		band->channels = channels;
 		band->n_bitrates = ath12k_g_rates_size;
 		band->bitrates = ath12k_g_rates;
-		ar->hw->wiphy->bands[NL80211_BAND_2GHZ] = band;
+		hw->wiphy->bands[NL80211_BAND_2GHZ] = band;
 
 		if (ar->ab->hw_params->single_pdev_only) {
 			phy_id = ath12k_get_phy_id(ar, WMI_HOST_WLAN_2G_CAP);
@@ -7203,7 +7205,7 @@ static int ath12k_mac_setup_channels_rates(struct ath12k *ar,
 			band->channels = channels;
 			band->n_bitrates = ath12k_a_rates_size;
 			band->bitrates = ath12k_a_rates;
-			ar->hw->wiphy->bands[NL80211_BAND_6GHZ] = band;
+			hw->wiphy->bands[NL80211_BAND_6GHZ] = band;
 			ath12k_mac_update_ch_list(ar, band,
 						  reg_cap->low_5ghz_chan,
 						  reg_cap->high_5ghz_chan);
@@ -7225,7 +7227,7 @@ static int ath12k_mac_setup_channels_rates(struct ath12k *ar,
 			band->channels = channels;
 			band->n_bitrates = ath12k_a_rates_size;
 			band->bitrates = ath12k_a_rates;
-			ar->hw->wiphy->bands[NL80211_BAND_5GHZ] = band;
+			hw->wiphy->bands[NL80211_BAND_5GHZ] = band;
 
 			if (ar->ab->hw_params->single_pdev_only) {
 				phy_id = ath12k_get_phy_id(ar, WMI_HOST_WLAN_5G_CAP);
@@ -7244,6 +7246,7 @@ static int ath12k_mac_setup_channels_rates(struct ath12k *ar,
 static int ath12k_mac_setup_iface_combinations(struct ath12k *ar)
 {
 	struct ath12k_base *ab = ar->ab;
+	struct ieee80211_hw *hw = ar->hw;
 	struct ieee80211_iface_combination *combinations;
 	struct ieee80211_iface_limit *limits;
 	int n_limits, max_interfaces;
@@ -7294,8 +7297,8 @@ static int ath12k_mac_setup_iface_combinations(struct ath12k *ar)
 						BIT(NL80211_CHAN_WIDTH_40) |
 						BIT(NL80211_CHAN_WIDTH_80);
 
-	ar->hw->wiphy->iface_combinations = combinations;
-	ar->hw->wiphy->n_iface_combinations = 1;
+	hw->wiphy->iface_combinations = combinations;
+	hw->wiphy->n_iface_combinations = 1;
 
 	return 0;
 }
@@ -7339,9 +7342,11 @@ static const struct wiphy_iftype_ext_capab ath12k_iftypes_ext_capa[] = {
 
 static void __ath12k_mac_unregister(struct ath12k *ar)
 {
+	struct ieee80211_hw *hw = ar->hw;
+
 	cancel_work_sync(&ar->regd_update_work);
 
-	ieee80211_unregister_hw(ar->hw);
+	ieee80211_unregister_hw(hw);
 
 	idr_for_each(&ar->txmgmt_idr, ath12k_mac_tx_mgmt_pending_free, ar);
 	idr_destroy(&ar->txmgmt_idr);
@@ -7350,10 +7355,10 @@ static void __ath12k_mac_unregister(struct ath12k *ar)
 	kfree(ar->mac.sbands[NL80211_BAND_5GHZ].channels);
 	kfree(ar->mac.sbands[NL80211_BAND_6GHZ].channels);
 
-	kfree(ar->hw->wiphy->iface_combinations[0].limits);
-	kfree(ar->hw->wiphy->iface_combinations);
+	kfree(hw->wiphy->iface_combinations[0].limits);
+	kfree(hw->wiphy->iface_combinations);
 
-	SET_IEEE80211_DEV(ar->hw, NULL);
+	SET_IEEE80211_DEV(hw, NULL);
 }
 
 void ath12k_mac_unregister(struct ath12k_base *ab)
@@ -7375,6 +7380,7 @@ void ath12k_mac_unregister(struct ath12k_base *ab)
 static int __ath12k_mac_register(struct ath12k *ar)
 {
 	struct ath12k_base *ab = ar->ab;
+	struct ieee80211_hw *hw = ar->hw;
 	struct ath12k_pdev_cap *cap = &ar->pdev->cap;
 	static const u32 cipher_suites[] = {
 		WLAN_CIPHER_SUITE_TKIP,
@@ -7392,9 +7398,9 @@ static int __ath12k_mac_register(struct ath12k *ar)
 
 	ath12k_pdev_caps_update(ar);
 
-	SET_IEEE80211_PERM_ADDR(ar->hw, ar->mac_addr);
+	SET_IEEE80211_PERM_ADDR(hw, ar->mac_addr);
 
-	SET_IEEE80211_DEV(ar->hw, ab->dev);
+	SET_IEEE80211_DEV(hw, ab->dev);
 
 	ret = ath12k_mac_setup_channels_rates(ar,
 					      cap->supported_bands);
@@ -7410,103 +7416,103 @@ static int __ath12k_mac_register(struct ath12k *ar)
 		goto err_free_channels;
 	}
 
-	ar->hw->wiphy->available_antennas_rx = cap->rx_chain_mask;
-	ar->hw->wiphy->available_antennas_tx = cap->tx_chain_mask;
+	hw->wiphy->available_antennas_rx = cap->rx_chain_mask;
+	hw->wiphy->available_antennas_tx = cap->tx_chain_mask;
 
-	ar->hw->wiphy->interface_modes = ab->hw_params->interface_modes;
+	hw->wiphy->interface_modes = ab->hw_params->interface_modes;
 
-	if (ar->hw->wiphy->bands[NL80211_BAND_2GHZ] &&
-	    ar->hw->wiphy->bands[NL80211_BAND_5GHZ] &&
-	    ar->hw->wiphy->bands[NL80211_BAND_6GHZ])
-		ieee80211_hw_set(ar->hw, SINGLE_SCAN_ON_ALL_BANDS);
+	if (hw->wiphy->bands[NL80211_BAND_2GHZ] &&
+	    hw->wiphy->bands[NL80211_BAND_5GHZ] &&
+	    hw->wiphy->bands[NL80211_BAND_6GHZ])
+		ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
 
-	ieee80211_hw_set(ar->hw, SIGNAL_DBM);
-	ieee80211_hw_set(ar->hw, SUPPORTS_PS);
-	ieee80211_hw_set(ar->hw, SUPPORTS_DYNAMIC_PS);
-	ieee80211_hw_set(ar->hw, MFP_CAPABLE);
-	ieee80211_hw_set(ar->hw, REPORTS_TX_ACK_STATUS);
-	ieee80211_hw_set(ar->hw, HAS_RATE_CONTROL);
-	ieee80211_hw_set(ar->hw, AP_LINK_PS);
-	ieee80211_hw_set(ar->hw, SPECTRUM_MGMT);
-	ieee80211_hw_set(ar->hw, CONNECTION_MONITOR);
-	ieee80211_hw_set(ar->hw, SUPPORTS_PER_STA_GTK);
-	ieee80211_hw_set(ar->hw, CHANCTX_STA_CSA);
-	ieee80211_hw_set(ar->hw, QUEUE_CONTROL);
-	ieee80211_hw_set(ar->hw, SUPPORTS_TX_FRAG);
-	ieee80211_hw_set(ar->hw, REPORTS_LOW_ACK);
+	ieee80211_hw_set(hw, SIGNAL_DBM);
+	ieee80211_hw_set(hw, SUPPORTS_PS);
+	ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
+	ieee80211_hw_set(hw, MFP_CAPABLE);
+	ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
+	ieee80211_hw_set(hw, HAS_RATE_CONTROL);
+	ieee80211_hw_set(hw, AP_LINK_PS);
+	ieee80211_hw_set(hw, SPECTRUM_MGMT);
+	ieee80211_hw_set(hw, CONNECTION_MONITOR);
+	ieee80211_hw_set(hw, SUPPORTS_PER_STA_GTK);
+	ieee80211_hw_set(hw, CHANCTX_STA_CSA);
+	ieee80211_hw_set(hw, QUEUE_CONTROL);
+	ieee80211_hw_set(hw, SUPPORTS_TX_FRAG);
+	ieee80211_hw_set(hw, REPORTS_LOW_ACK);
 
 	if (ht_cap & WMI_HT_CAP_ENABLED) {
-		ieee80211_hw_set(ar->hw, AMPDU_AGGREGATION);
-		ieee80211_hw_set(ar->hw, TX_AMPDU_SETUP_IN_HW);
-		ieee80211_hw_set(ar->hw, SUPPORTS_REORDERING_BUFFER);
-		ieee80211_hw_set(ar->hw, SUPPORTS_AMSDU_IN_AMPDU);
-		ieee80211_hw_set(ar->hw, USES_RSS);
+		ieee80211_hw_set(hw, AMPDU_AGGREGATION);
+		ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
+		ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
+		ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
+		ieee80211_hw_set(hw, USES_RSS);
 	}
 
-	ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;
-	ar->hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
+	hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;
+	hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 
 	/* TODO: Check if HT capability advertised from firmware is different
 	 * for each band for a dual band capable radio. It will be tricky to
 	 * handle it when the ht capability different for each band.
 	 */
 	if (ht_cap & WMI_HT_CAP_DYNAMIC_SMPS)
-		ar->hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
+		hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
 
-	ar->hw->wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID;
-	ar->hw->wiphy->max_scan_ie_len = WLAN_SCAN_PARAMS_MAX_IE_LEN;
+	hw->wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID;
+	hw->wiphy->max_scan_ie_len = WLAN_SCAN_PARAMS_MAX_IE_LEN;
 
-	ar->hw->max_listen_interval = ATH12K_MAX_HW_LISTEN_INTERVAL;
+	hw->max_listen_interval = ATH12K_MAX_HW_LISTEN_INTERVAL;
 
-	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
-	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
-	ar->hw->wiphy->max_remain_on_channel_duration = 5000;
+	hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
+	hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
+	hw->wiphy->max_remain_on_channel_duration = 5000;
 
-	ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
-	ar->hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
+	hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
+	hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
 				   NL80211_FEATURE_AP_SCAN;
 
 	ar->max_num_stations = TARGET_NUM_STATIONS;
 	ar->max_num_peers = TARGET_NUM_PEERS_PDEV;
 
-	ar->hw->wiphy->max_ap_assoc_sta = ar->max_num_stations;
+	hw->wiphy->max_ap_assoc_sta = ar->max_num_stations;
 
-	ar->hw->queues = ATH12K_HW_MAX_QUEUES;
-	ar->hw->wiphy->tx_queue_len = ATH12K_QUEUE_LEN;
-	ar->hw->offchannel_tx_hw_queue = ATH12K_HW_MAX_QUEUES - 1;
-	ar->hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HE;
+	hw->queues = ATH12K_HW_MAX_QUEUES;
+	hw->wiphy->tx_queue_len = ATH12K_QUEUE_LEN;
+	hw->offchannel_tx_hw_queue = ATH12K_HW_MAX_QUEUES - 1;
+	hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HE;
 
-	ar->hw->vif_data_size = sizeof(struct ath12k_vif);
-	ar->hw->sta_data_size = sizeof(struct ath12k_sta);
+	hw->vif_data_size = sizeof(struct ath12k_vif);
+	hw->sta_data_size = sizeof(struct ath12k_sta);
 
-	wiphy_ext_feature_set(ar->hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
-	wiphy_ext_feature_set(ar->hw->wiphy, NL80211_EXT_FEATURE_STA_TX_PWR);
+	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
+	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_STA_TX_PWR);
 
-	ar->hw->wiphy->cipher_suites = cipher_suites;
-	ar->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
+	hw->wiphy->cipher_suites = cipher_suites;
+	hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
 
-	ar->hw->wiphy->iftype_ext_capab = ath12k_iftypes_ext_capa;
-	ar->hw->wiphy->num_iftype_ext_capab =
+	hw->wiphy->iftype_ext_capab = ath12k_iftypes_ext_capa;
+	hw->wiphy->num_iftype_ext_capab =
 		ARRAY_SIZE(ath12k_iftypes_ext_capa);
 
 	if (ar->supports_6ghz) {
-		wiphy_ext_feature_set(ar->hw->wiphy,
+		wiphy_ext_feature_set(hw->wiphy,
 				      NL80211_EXT_FEATURE_FILS_DISCOVERY);
-		wiphy_ext_feature_set(ar->hw->wiphy,
+		wiphy_ext_feature_set(hw->wiphy,
 				      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP);
 	}
 
-	wiphy_ext_feature_set(ar->hw->wiphy, NL80211_EXT_FEATURE_PUNCT);
+	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_PUNCT);
 
-	ath12k_reg_init(ar);
+	ath12k_reg_init(hw);
 
 	if (!test_bit(ATH12K_FLAG_RAW_MODE, &ab->dev_flags)) {
-		ar->hw->netdev_features = NETIF_F_HW_CSUM;
-		ieee80211_hw_set(ar->hw, SW_CRYPTO_CONTROL);
-		ieee80211_hw_set(ar->hw, SUPPORT_FAST_XMIT);
+		hw->netdev_features = NETIF_F_HW_CSUM;
+		ieee80211_hw_set(hw, SW_CRYPTO_CONTROL);
+		ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
 	}
 
-	ret = ieee80211_register_hw(ar->hw);
+	ret = ieee80211_register_hw(hw);
 	if (ret) {
 		ath12k_err(ar->ab, "ieee80211 registration failed: %d\n", ret);
 		goto err_free_if_combs;
@@ -7518,7 +7524,7 @@ static int __ath12k_mac_register(struct ath12k *ar)
 		 * while. But that time is so short and in practise it make
 		 * a difference in real life.
 		 */
-		ar->hw->wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MONITOR);
+		hw->wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MONITOR);
 
 	/* Apply the regd received during initialization */
 	ret = ath12k_regd_update(ar, true);
@@ -7530,11 +7536,11 @@ static int __ath12k_mac_register(struct ath12k *ar)
 	return 0;
 
 err_unregister_hw:
-	ieee80211_unregister_hw(ar->hw);
+	ieee80211_unregister_hw(hw);
 
 err_free_if_combs:
-	kfree(ar->hw->wiphy->iface_combinations[0].limits);
-	kfree(ar->hw->wiphy->iface_combinations);
+	kfree(hw->wiphy->iface_combinations[0].limits);
+	kfree(hw->wiphy->iface_combinations);
 
 err_free_channels:
 	kfree(ar->mac.sbands[NL80211_BAND_2GHZ].channels);
@@ -7542,7 +7548,7 @@ static int __ath12k_mac_register(struct ath12k *ar)
 	kfree(ar->mac.sbands[NL80211_BAND_6GHZ].channels);
 
 err:
-	SET_IEEE80211_DEV(ar->hw, NULL);
+	SET_IEEE80211_DEV(hw, NULL);
 	return ret;
 }
 
diff --git a/drivers/net/wireless/ath/ath12k/reg.c b/drivers/net/wireless/ath/ath12k/reg.c
index b7fe4a6e7873..a31b9d9f3b48 100644
--- a/drivers/net/wireless/ath/ath12k/reg.c
+++ b/drivers/net/wireless/ath/ath12k/reg.c
@@ -199,6 +199,7 @@ static void ath12k_copy_regd(struct ieee80211_regdomain *regd_orig,
 
 int ath12k_regd_update(struct ath12k *ar, bool init)
 {
+	struct ieee80211_hw *hw = ar->hw;
 	struct ieee80211_regdomain *regd, *regd_copy = NULL;
 	int ret, regd_len, pdev_id;
 	struct ath12k_base *ab;
@@ -246,9 +247,9 @@ int ath12k_regd_update(struct ath12k *ar, bool init)
 	}
 
 	rtnl_lock();
-	wiphy_lock(ar->hw->wiphy);
-	ret = regulatory_set_wiphy_regd_sync(ar->hw->wiphy, regd_copy);
-	wiphy_unlock(ar->hw->wiphy);
+	wiphy_lock(hw->wiphy);
+	ret = regulatory_set_wiphy_regd_sync(hw->wiphy, regd_copy);
+	wiphy_unlock(hw->wiphy);
 	rtnl_unlock();
 
 	kfree(regd_copy);
@@ -729,10 +730,10 @@ void ath12k_regd_update_work(struct work_struct *work)
 	}
 }
 
-void ath12k_reg_init(struct ath12k *ar)
+void ath12k_reg_init(struct ieee80211_hw *hw)
 {
-	ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED;
-	ar->hw->wiphy->reg_notifier = ath12k_reg_notifier;
+	hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED;
+	hw->wiphy->reg_notifier = ath12k_reg_notifier;
 }
 
 void ath12k_reg_free(struct ath12k_base *ab)
diff --git a/drivers/net/wireless/ath/ath12k/reg.h b/drivers/net/wireless/ath/ath12k/reg.h
index 35569f03042d..cae59ffa1cd2 100644
--- a/drivers/net/wireless/ath/ath12k/reg.h
+++ b/drivers/net/wireless/ath/ath12k/reg.h
@@ -89,7 +89,7 @@ enum ath12k_reg_phy_bitmap {
 	ATH12K_REG_PHY_BITMAP_NO11BE	= BIT(6),
 };
 
-void ath12k_reg_init(struct ath12k *ar);
+void ath12k_reg_init(struct ieee80211_hw *hw);
 void ath12k_reg_free(struct ath12k_base *ab);
 void ath12k_regd_update_work(struct work_struct *work);
 struct ieee80211_regdomain *ath12k_reg_build_regd(struct ath12k_base *ab,
-- 
2.34.1