wifi: ath11k: Add tx ack signal support for management packets

Add support to notify tx ack signal values for management
packets to userspace through nl80211 interface.

Advertise NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT flag
to enable this feature and it will be used for data
packets as well.

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1

Signed-off-by: Abinaya Kalaiselvan <quic_akalaise@quicinc.com>
Signed-off-by: Maharaja Kennadyrajan <quic_mkenna@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20221219053844.4084486-1-quic_mkenna@quicinc.com

diff --git a/drivers/net/wireless/ath/ath11k/hw.c b/drivers/net/wireless/ath/ath11k/hw.c
index ab8f0cc..60ac215 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/hw.c
+++ b/drivers/net/wireless/ath/ath11k/hw.c
@@ -201,6 +201,7 @@ static void ath11k_init_wmi_config_ipq8074(struct ath11k_base *ab,
        config->twt_ap_pdev_count = ab->num_radios;
        config->twt_ap_sta_count = 1000;
        config->flag1 |= WMI_RSRC_CFG_FLAG1_BSS_CHANNEL_INFO_64;
+       config->flag1 |= WMI_RSRC_CFG_FLAG1_ACK_RSSI;
 }
 
 static int ath11k_hw_mac_id_to_pdev_id_ipq8074(struct ath11k_hw_params *hw,

diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index fd1a23e..cad832e 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -9174,6 +9174,11 @@ static int __ath11k_mac_register(struct ath11k *ar)
                goto err_free_if_combs;
        }
 
+       if (test_bit(WMI_TLV_SERVICE_TX_DATA_MGMT_ACK_RSSI,
+                    ar->ab->wmi_ab.svc_map))
+               wiphy_ext_feature_set(ar->hw->wiphy,
+                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT);
+
        ar->hw->queues = ATH11K_HW_MAX_QUEUES;
        ar->hw->wiphy->tx_queue_len = ATH11K_QUEUE_LEN;
        ar->hw->offchannel_tx_hw_queue = ATH11K_HW_MAX_QUEUES - 1;

diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c
index 7057c79..815f49c 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -5229,8 +5229,8 @@ static int ath11k_pull_mgmt_rx_params_tlv(struct ath11k_base *ab,
        return 0;
 }
 
-static int wmi_process_mgmt_tx_comp(struct ath11k *ar, u32 desc_id,
-                                   u32 status)
+static int wmi_process_mgmt_tx_comp(struct ath11k *ar,
+                                   struct wmi_mgmt_tx_compl_event *tx_compl_param)
 {
        struct sk_buff *msdu;
        struct ieee80211_tx_info *info;
@@ -5238,24 +5238,29 @@ static int wmi_process_mgmt_tx_comp(struct ath11k *ar, u32 desc_id,
        int num_mgmt;
 
        spin_lock_bh(&ar->txmgmt_idr_lock);
-       msdu = idr_find(&ar->txmgmt_idr, desc_id);
+       msdu = idr_find(&ar->txmgmt_idr, tx_compl_param->desc_id);
 
        if (!msdu) {
                ath11k_warn(ar->ab, "received mgmt tx compl for invalid msdu_id: %d\n",
-                           desc_id);
+                           tx_compl_param->desc_id);
                spin_unlock_bh(&ar->txmgmt_idr_lock);
                return -ENOENT;
        }
 
-       idr_remove(&ar->txmgmt_idr, desc_id);
+       idr_remove(&ar->txmgmt_idr, tx_compl_param->desc_id);
        spin_unlock_bh(&ar->txmgmt_idr_lock);
 
        skb_cb = ATH11K_SKB_CB(msdu);
        dma_unmap_single(ar->ab->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
 
        info = IEEE80211_SKB_CB(msdu);
-       if ((!(info->flags & IEEE80211_TX_CTL_NO_ACK)) && !status)
+       if ((!(info->flags & IEEE80211_TX_CTL_NO_ACK)) &&
+           !tx_compl_param->status) {
                info->flags |= IEEE80211_TX_STAT_ACK;
+               if (test_bit(WMI_TLV_SERVICE_TX_DATA_MGMT_ACK_RSSI,
+                            ar->ab->wmi_ab.svc_map))
+                       info->status.ack_signal = tx_compl_param->ack_rssi;
+       }
 
        ieee80211_tx_status_irqsafe(ar->hw, msdu);
 
@@ -5267,7 +5272,7 @@ static int wmi_process_mgmt_tx_comp(struct ath11k *ar, u32 desc_id,
 
        ath11k_dbg(ar->ab, ATH11K_DBG_WMI,
                   "wmi mgmt tx comp pending %d desc id %d\n",
-                  num_mgmt, desc_id);
+                  num_mgmt, tx_compl_param->desc_id);
 
        if (!num_mgmt)
                wake_up(&ar->txmgmt_empty_waitq);
@@ -5300,6 +5305,7 @@ static int ath11k_pull_mgmt_tx_compl_param_tlv(struct ath11k_base *ab,
        param->pdev_id = ev->pdev_id;
        param->desc_id = ev->desc_id;
        param->status = ev->status;
+       param->ack_rssi = ev->ack_rssi;
 
        kfree(tb);
        return 0;
@@ -7070,13 +7076,12 @@ static void ath11k_mgmt_tx_compl_event(struct ath11k_base *ab, struct sk_buff *s
                goto exit;
        }
 
-       wmi_process_mgmt_tx_comp(ar, tx_compl_param.desc_id,
-                                tx_compl_param.status);
+       wmi_process_mgmt_tx_comp(ar, &tx_compl_param);
 
        ath11k_dbg(ab, ATH11K_DBG_MGMT,
-                  "mgmt tx compl ev pdev_id %d, desc_id %d, status %d",
+                  "mgmt tx compl ev pdev_id %d, desc_id %d, status %d ack_rssi %d",
                   tx_compl_param.pdev_id, tx_compl_param.desc_id,
-                  tx_compl_param.status);
+                  tx_compl_param.status, tx_compl_param.ack_rssi);
 
 exit:
        rcu_read_unlock();

diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
index d3b74f1..63dbb08 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -2311,6 +2311,7 @@ struct wmi_init_cmd {
 } __packed;
 
 #define WMI_RSRC_CFG_FLAG1_BSS_CHANNEL_INFO_64 BIT(5)
+#define WMI_RSRC_CFG_FLAG1_ACK_RSSI BIT(18)
 
 struct wmi_resource_config {
        u32 tlv_header;
@@ -4550,6 +4551,8 @@ struct wmi_mgmt_tx_compl_event {
        u32 desc_id;
        u32 status;
        u32 pdev_id;
+       u32 ppdu_id;
+       u32 ack_rssi;
 } __packed;
 
 struct wmi_scan_event {