On 23/03/2022 21:45, Edmond Gagnon wrote:
Currently, the driver reports a tx_rate of 6.0 MBit/s no matter the true
rate:
root@linaro-developer:~# iw wlan0 link
Connected to 6c:f3:7f:eb:9b:92 (on wlan0)
SSID: SQ-DEVICETEST
freq: 5200
RX: 4141 bytes (32 packets)
TX: 2082 bytes (15 packets)
signal: -77 dBm
rx bitrate: 135.0 MBit/s MCS 6 40MHz short GI
tx bitrate: 6.0 MBit/s
bss flags: short-slot-time
dtim period: 1
beacon int: 100
This patch requests HAL_GLOBAL_CLASS_A_STATS_INFO via a hal_get_stats
firmware message and reports it via ieee80211_ops::sta_statistics.
root@linaro-developer:~# iw wlan0 link
Connected to 6c:f3:7f:eb:73:b2 (on wlan0)
SSID: SQ-DEVICETEST
freq: 5700
RX: 26788094 bytes (19859 packets)
TX: 1101376 bytes (12119 packets)
signal: -75 dBm
rx bitrate: 135.0 MBit/s MCS 6 40MHz short GI
tx bitrate: 108.0 MBit/s VHT-MCS 5 40MHz VHT-NSS 1
bss flags: short-slot-time
dtim period: 1
beacon int: 100
Tested on MSM8939 with WCN3680B running firmware CNSS-PR-2-0-1-2-c1-00083,
and verified by sniffing frames over the air with Wireshark to ensure the
MCS indices match.
Signed-off-by: Edmond Gagnon <egagnon@xxxxxxxxxxxx>
Reviewed-by: Benjamin Li <benl@xxxxxxxxxxxx>
---
Changes in v3:
- Refactored to report tx_rate via ieee80211_ops::sta_statistics
- Dropped get_sta_index patch
- Addressed style comments
Changes in v2:
- Refactored to use existing wcn36xx_hal_get_stats_{req,rsp}_msg structs.
- Added more notes about testing.
- Reduced reporting interval to 3000msec.
- Assorted type and memory safety fixes.
- Make wcn36xx_smd_get_stats friendlier to future message implementors.
drivers/net/wireless/ath/wcn36xx/hal.h | 7 +++-
drivers/net/wireless/ath/wcn36xx/main.c | 16 +++++++
drivers/net/wireless/ath/wcn36xx/smd.c | 56 +++++++++++++++++++++++++
drivers/net/wireless/ath/wcn36xx/smd.h | 2 +
drivers/net/wireless/ath/wcn36xx/txrx.c | 29 +++++++++++++
drivers/net/wireless/ath/wcn36xx/txrx.h | 1 +
6 files changed, 110 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/wcn36xx/hal.h b/drivers/net/wireless/ath/wcn36xx/hal.h
index 2a1db9756fd5..46a49f0a51b3 100644
--- a/drivers/net/wireless/ath/wcn36xx/hal.h
+++ b/drivers/net/wireless/ath/wcn36xx/hal.h
@@ -2626,7 +2626,12 @@ enum tx_rate_info {
HAL_TX_RATE_SGI = 0x8,
/* Rate with Long guard interval */
- HAL_TX_RATE_LGI = 0x10
+ HAL_TX_RATE_LGI = 0x10,
+
+ /* VHT rates */
+ HAL_TX_RATE_VHT20 = 0x20,
+ HAL_TX_RATE_VHT40 = 0x40,
+ HAL_TX_RATE_VHT80 = 0x80,
};
struct ani_global_class_a_stats_info {
diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c
index b545d4b2b8c4..fc76b090c39f 100644
--- a/drivers/net/wireless/ath/wcn36xx/main.c
+++ b/drivers/net/wireless/ath/wcn36xx/main.c
@@ -1400,6 +1400,21 @@ static int wcn36xx_get_survey(struct ieee80211_hw *hw, int idx,
return 0;
}
+static void wcn36xx_sta_statistics(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta, struct station_info *sinfo)
Consider running this through checkpatch.pl and fixing most of the
complaints, use your discretion.
scripts/checkpatch.pl --strict
~/Development/patches/linux/wifi/v3-wcn36xx-Implement-tx_rate-reporting.patch
static void wcn36xx_sta_statistics(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct station_info *sinfo)
+{
+ struct wcn36xx *wcn;
+ u8 sta_index;
+ int status = 0;
+
+ wcn = hw->priv;
+ sta_index = get_sta_index(vif, wcn36xx_sta_to_priv(sta));
+ status = wcn36xx_smd_get_stats(wcn, sta_index, HAL_GLOBAL_CLASS_A_STATS_INFO, sinfo);
status = wcn36xx_smd_get_stats(wcn, sta_index,
HAL_GLOBAL_CLASS_A_STATS_INFO, sinfo);
+
+ if (status)
+ wcn36xx_err("wcn36xx_smd_get_stats failed\n");
+}
+
static const struct ieee80211_ops wcn36xx_ops = {
.start = wcn36xx_start,
.stop = wcn36xx_stop,
@@ -1423,6 +1438,7 @@ static const struct ieee80211_ops wcn36xx_ops = {
.set_rts_threshold = wcn36xx_set_rts_threshold,
.sta_add = wcn36xx_sta_add,
.sta_remove = wcn36xx_sta_remove,
+ .sta_statistics = wcn36xx_sta_statistics,
.ampdu_action = wcn36xx_ampdu_action,
#if IS_ENABLED(CONFIG_IPV6)
.ipv6_addr_change = wcn36xx_ipv6_addr_change,
diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c
index caeb68901326..8f9aa892e5ec 100644
--- a/drivers/net/wireless/ath/wcn36xx/smd.c
+++ b/drivers/net/wireless/ath/wcn36xx/smd.c
@@ -2627,6 +2627,61 @@ int wcn36xx_smd_del_ba(struct wcn36xx *wcn, u16 tid, u8 direction, u8 sta_index)
return ret;
}
+int wcn36xx_smd_get_stats(struct wcn36xx *wcn, u8 sta_index, u32 stats_mask,
+ struct station_info *sinfo)
+{
+ struct wcn36xx_hal_stats_req_msg msg_body;
+ struct wcn36xx_hal_stats_rsp_msg *rsp;
struct ani_global_class_a_stats_info *stats_info;
+ void *rsp_body;
+ int ret = 0;
+
+ if (stats_mask & ~HAL_GLOBAL_CLASS_A_STATS_INFO) {
+ wcn36xx_err("stats_mask 0x%x contains unimplemented types\n",
+ stats_mask);
+ return -EINVAL;
+ }
+
+ mutex_lock(&wcn->hal_mutex);
+ INIT_HAL_MSG(msg_body, WCN36XX_HAL_GET_STATS_REQ);
+
+ msg_body.sta_id = sta_index;
+ msg_body.stats_mask = stats_mask;
+
+ PREPARE_HAL_BUF(wcn->hal_buf, msg_body);
+
+ ret = wcn36xx_smd_send_and_wait(wcn, msg_body.header.len);
+ if (ret) {
+ wcn36xx_err("sending hal_get_stats failed\n");
+ goto out;
+ }
+
+ ret = wcn36xx_smd_rsp_status_check(wcn->hal_buf, wcn->hal_rsp_len);
+ if (ret) {
+ wcn36xx_err("hal_get_stats response failed err=%d\n", ret);
+ goto out;
+ }
+
+ rsp = (struct wcn36xx_hal_stats_rsp_msg *)wcn->hal_buf;
+ rsp_body = (wcn->hal_buf + sizeof(struct wcn36xx_hal_stats_rsp_msg));
+
+ if (rsp->stats_mask != stats_mask) {
+ wcn36xx_err("stats_mask 0x%x differs from requested 0x%x\n",
+ rsp->stats_mask, stats_mask);
+ goto out;
+ }
+
If you take a pointer and cast it, then you won't have this very long
line with the cast
stats_info = (struct ani_global_class_a_stats_info *)rsp_body;
+ if (rsp->stats_mask & HAL_GLOBAL_CLASS_A_STATS_INFO) {
+ wcn36xx_process_tx_rate((struct ani_global_class_a_stats_info *)rsp_body,
+ &sinfo->txrate);
wcn36xx_process_tx_rate(stats_info, &sinfo->txrate);
Other than that LGTM
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
