In range test, the RSSI is helpful to check attenuation of cable and align
difference between environments. Since data packets can be transmitted with
different rate and power, the RSSI of all packets can be variant.
Oppositely beacon is transmitted with the same rate and power, so beacon
RSSI will be relatively invariant, and more helpful to diagnose problems.
The output of beacon RSSI in unit of dBm looks like:
Beacon: 19 (-33 dBm), TF: 0
Signed-off-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
---
drivers/net/wireless/realtek/rtw89/core.c | 3 +++
drivers/net/wireless/realtek/rtw89/core.h | 1 +
drivers/net/wireless/realtek/rtw89/debug.c | 7 +++++--
drivers/net/wireless/realtek/rtw89/phy.c | 2 ++
4 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/realtek/rtw89/core.c b/drivers/net/wireless/realtek/rtw89/core.c
index 5b8e65f6de6a..5d08c39a5bbb 100644
--- a/drivers/net/wireless/realtek/rtw89/core.c
+++ b/drivers/net/wireless/realtek/rtw89/core.c
@@ -2109,6 +2109,9 @@ static void rtw89_vif_rx_stats_iter(void *data, u8 *mac,
rtw89_fw_h2c_rssi_offload(rtwdev, phy_ppdu);
}
pkt_stat->beacon_nr++;
+
+ if (phy_ppdu)
+ ewma_rssi_add(&rtwdev->phystat.bcn_rssi, phy_ppdu->rssi_avg);
}
if (!ether_addr_equal(bss_conf->addr, hdr->addr1))
diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h
index ac9f9d33436c..8e4b8964e912 100644
--- a/drivers/net/wireless/realtek/rtw89/core.h
+++ b/drivers/net/wireless/realtek/rtw89/core.h
@@ -4747,6 +4747,7 @@ DECLARE_EWMA(thermal, 4, 4);
struct rtw89_phy_stat {
struct ewma_thermal avg_thermal[RF_PATH_MAX];
+ struct ewma_rssi bcn_rssi;
struct rtw89_pkt_stat cur_pkt_stat;
struct rtw89_pkt_stat last_pkt_stat;
};
diff --git a/drivers/net/wireless/realtek/rtw89/debug.c b/drivers/net/wireless/realtek/rtw89/debug.c
index 7391f131229a..74b0c722a5b8 100644
--- a/drivers/net/wireless/realtek/rtw89/debug.c
+++ b/drivers/net/wireless/realtek/rtw89/debug.c
@@ -3673,13 +3673,16 @@ static int rtw89_debug_priv_phy_info_get(struct seq_file *m, void *v)
const struct rtw89_chip_info *chip = rtwdev->chip;
const struct rtw89_rx_rate_cnt_info *info;
enum rtw89_hw_rate first_rate;
+ u8 rssi;
int i;
+ rssi = ewma_rssi_read(&rtwdev->phystat.bcn_rssi);
+
seq_printf(m, "TP TX: %u [%u] Mbps (lv: %d), RX: %u [%u] Mbps (lv: %d)\n",
stats->tx_throughput, stats->tx_throughput_raw, stats->tx_tfc_lv,
stats->rx_throughput, stats->rx_throughput_raw, stats->rx_tfc_lv);
- seq_printf(m, "Beacon: %u, TF: %u\n", pkt_stat->beacon_nr,
- stats->rx_tf_periodic);
+ seq_printf(m, "Beacon: %u (%d dBm), TF: %u\n", pkt_stat->beacon_nr,
+ RTW89_RSSI_RAW_TO_DBM(rssi), stats->rx_tf_periodic);
seq_printf(m, "Avg packet length: TX=%u, RX=%u\n", stats->tx_avg_len,
stats->rx_avg_len);
diff --git a/drivers/net/wireless/realtek/rtw89/phy.c b/drivers/net/wireless/realtek/rtw89/phy.c
index 1527b08e0c92..1505dce2b313 100644
--- a/drivers/net/wireless/realtek/rtw89/phy.c
+++ b/drivers/net/wireless/realtek/rtw89/phy.c
@@ -4894,6 +4894,8 @@ static void rtw89_phy_stat_init(struct rtw89_dev *rtwdev)
memset(&phystat->cur_pkt_stat, 0, sizeof(phystat->cur_pkt_stat));
memset(&phystat->last_pkt_stat, 0, sizeof(phystat->last_pkt_stat));
+
+ ewma_rssi_init(&phystat->bcn_rssi);
}
void rtw89_phy_stat_track(struct rtw89_dev *rtwdev)
--
2.25.1
