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Re: [PATCH 3/3] wifi: ath12k: report station mode signal strength

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On 2024/4/12 5:51, Jeff Johnson wrote:
On 4/10/2024 7:53 PM, Lingbo Kong wrote:
Currently, the signal strength of "iw dev xxx station dump" always show an
invalid value.

This is because signal strength is only set in ath12k_mgmt_rx_event()
function, and not set for received data packet. So, change to get signal
from firmware and report to mac80211.

After that, "iw dev xxx station dump" show the correct signal strength.
Such as:

Station 00:03:7f:12:03:03 (on wlo1)
         inactive time:  36 ms
         rx bytes:       61571
         rx packets:     336
         tx bytes:       28204
         tx packets:     205
         tx retries:     49
         tx failed:      0
         beacon loss:    0
         beacon rx:      83
         rx drop misc:   66
         signal:         -24 dBm
         beacon signal avg:      -22 dBm

For WCN7850, the firmware supports db2dbm, so not need to add noise floor.
For QCN9274, the firmware not support db2dbm, so need to add noise floor.

This patch affects the station mode of WCN7850 and QCN9274.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.2.1-00201-QCAHKSWPL_SILICONZ-1

Signed-off-by: Lingbo Kong <quic_lingbok@xxxxxxxxxxx>
---
  drivers/net/wireless/ath/ath12k/core.h |   2 +
  drivers/net/wireless/ath/ath12k/mac.c  |  56 ++++++++++-
  drivers/net/wireless/ath/ath12k/wmi.c  | 130 +++++++++++++++++++++++++
  drivers/net/wireless/ath/ath12k/wmi.h  |  48 +++++++++
  4 files changed, 234 insertions(+), 2 deletions(-)
[...]
diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h
index 78afc94a815d..9016eda03d57 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.h
+++ b/drivers/net/wireless/ath/ath12k/wmi.h
@@ -4811,6 +4811,52 @@ struct wmi_twt_disable_event {
  	__le32 status;
  } __packed;
+struct wmi_stats_event {
+	__le32 stats_id;
+	__le32 num_pdev_stats;
+	__le32 num_vdev_stats;
+	__le32 num_peer_stats;
+	__le32 num_bcnflt_stats;
+	__le32 num_chan_stats;
+	__le32 num_mib_stats;
+	__le32 pdev_id;
+	__le32 num_bcn_stats;
+	__le32 num_peer_extd_stats;
+	__le32 num_peer_extd2_stats;
+} __packed;
+
+enum wmi_stats_id {
+	WMI_REQUEST_VDEV_STAT	= BIT(3),
+};
+
+struct wmi_request_stats_cmd {
+	__le32 tlv_header;
+	__le32 stats_id;
+	__le32 vdev_id;
+	struct ath12k_wmi_mac_addr_params peer_macaddr;
+	__le32 pdev_id;
+} __packed;
+
+#define WLAN_MAX_AC 4
+#define MAX_TX_RATE_VALUES 10
+
+struct ath12k_wmi_vdev_stats {

this name does not conform to the "Naming conventions for structures" outlined
at the beginning of the file:
  * _params is a structure which is embedded either into _cmd or _event (or
  * both), it is not sent individually.


Oh, thanks for pointing out.
I get what you mean, but the ath12k_wmi_vdev_stats belongs to event, so, i can changes it to wmi_vdev_stats_event, i will apply it in next version.

Best regards
Lingbo Kong


+	__le32 vdev_id;
+	__le32 beacon_snr;
+	__le32 data_snr;
+	__le32 num_tx_frames[WLAN_MAX_AC];
+	__le32 num_rx_frames;
+	__le32 num_tx_frames_retries[WLAN_MAX_AC];
+	__le32 num_tx_frames_failures[WLAN_MAX_AC];
+	__le32 num_rts_fail;
+	__le32 num_rts_success;
+	__le32 num_rx_err;
+	__le32 num_rx_discard;
+	__le32 num_tx_not_acked;
+	__le32 tx_rate_history[MAX_TX_RATE_VALUES];
+	__le32 beacon_rssi_history[MAX_TX_RATE_VALUES];
+} __packed;





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