[PATCH 0/6] bug fixes and enhancements to 6 GHz band support

[PATCH 0/6] bug fixes and enhancements to 6 GHz band support

[Pradeep Kumar Chitrapu]

In 6 GHz band, add support for
1. channel 2.
2. Fix packet drop issues.
3. AMPDU aggregation
4. SMPS configuration

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

Pradeep Kumar Chitrapu (6):
  wifi: ath12k: add channel 2 into 6 GHz channel list
  wifi: ath12k: Correct 6 GHz frequency value in rx status
  wifi: ath12k: fix survey dump collection in 6 GHz
  wifi: ath12k: add 6 GHz params in peer assoc command
  wifi: ath12k: refactor smps configuration
  wifi: ath12k: support SMPS configuration for 6 GHz

 drivers/net/wireless/ath/ath12k/core.h  |   2 +-
 drivers/net/wireless/ath/ath12k/dp_rx.c |   9 +-
 drivers/net/wireless/ath/ath12k/mac.c   | 115 ++++++++++++++++++++----
 drivers/net/wireless/ath/ath12k/wmi.c   |  10 ++-
 4 files changed, 111 insertions(+), 25 deletions(-)


base-commit: fe7e1b830cf3c0272aa4eaf367c4c7b29c169c3d
-- 
2.17.1

[PATCH 1/6] wifi: ath12k: add channel 2 into 6 GHz channel list

[Pradeep Kumar Chitrapu]

Add support for the 6 GHz channel 2 with center frequency
5935 MHz and operating class 136 per IEEE Std 802.11ax-2021,
Table E-4.

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

Signed-off-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/core.h | 2 +-
 drivers/net/wireless/ath/ath12k/mac.c  | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index 97e5a0ccd233..ea5d0d9b54e4 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -430,7 +430,7 @@ struct ath12k_sta {
 #define ATH12K_MIN_5G_FREQ 4150
 #define ATH12K_MIN_6G_FREQ 5925
 #define ATH12K_MAX_6G_FREQ 7115
-#define ATH12K_NUM_CHANS 100
+#define ATH12K_NUM_CHANS 101
 #define ATH12K_MAX_5G_CHAN 173
 
 enum ath12k_state {
diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 52a5fb8b03e9..b91d34b602dd 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -90,6 +90,10 @@ static const struct ieee80211_channel ath12k_5ghz_channels[] = {
 };
 
 static const struct ieee80211_channel ath12k_6ghz_channels[] = {
+	/* Operating Class 136 */
+	CHAN6G(2, 5935, 0),
+
+	/* Operating Classes 131-135 */
 	CHAN6G(1, 5955, 0),
 	CHAN6G(5, 5975, 0),
 	CHAN6G(9, 5995, 0),
-- 
2.17.1

[PATCH 2/6] wifi: ath12k: Correct 6 GHz frequency value in rx status

[Pradeep Kumar Chitrapu]

The frequency in the rx status is currently being filled
incorrectly for the 6 GHz band. The channel number received is
invalid in this case, resulting in packet drops. Fix this
issue by correcting the frequency calculation.

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

Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices")
Signed-off-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/dp_rx.c |  9 ++++++---
 drivers/net/wireless/ath/ath12k/wmi.c   | 10 +++++++---
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/dp_rx.c b/drivers/net/wireless/ath/ath12k/dp_rx.c
index a593beecdd12..2382274dd857 100644
--- a/drivers/net/wireless/ath/ath12k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath12k/dp_rx.c
@@ -2397,8 +2397,10 @@ void ath12k_dp_rx_h_ppdu(struct ath12k *ar, struct hal_rx_desc *rx_desc,
 	channel_num = meta_data;
 	center_freq = meta_data >> 16;
 
-	if (center_freq >= 5935 && center_freq <= 7105) {
+	if (center_freq >= ATH12K_MIN_6G_FREQ &&
+	    center_freq <= ATH12K_MAX_6G_FREQ) {
 		rx_status->band = NL80211_BAND_6GHZ;
+		rx_status->freq = center_freq;
 	} else if (channel_num >= 1 && channel_num <= 14) {
 		rx_status->band = NL80211_BAND_2GHZ;
 	} else if (channel_num >= 36 && channel_num <= 173) {
@@ -2416,8 +2418,9 @@ void ath12k_dp_rx_h_ppdu(struct ath12k *ar, struct hal_rx_desc *rx_desc,
 				rx_desc, sizeof(*rx_desc));
 	}
 
-	rx_status->freq = ieee80211_channel_to_frequency(channel_num,
-							 rx_status->band);
+	if (rx_status->band != NL80211_BAND_6GHZ)
+		rx_status->freq = ieee80211_channel_to_frequency(channel_num,
+								 rx_status->band);
 
 	ath12k_dp_rx_h_rate(ar, rx_desc, rx_status);
 }
diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c
index 34de3d16efc0..2f0d82d88f20 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.c
+++ b/drivers/net/wireless/ath/ath12k/wmi.c
@@ -5877,8 +5877,10 @@ static void ath12k_mgmt_rx_event(struct ath12k_base *ab, struct sk_buff *skb)
 	if (rx_ev.status & WMI_RX_STATUS_ERR_MIC)
 		status->flag |= RX_FLAG_MMIC_ERROR;
 
-	if (rx_ev.chan_freq >= ATH12K_MIN_6G_FREQ) {
+	if (rx_ev.chan_freq >= ATH12K_MIN_6G_FREQ &&
+	    rx_ev.chan_freq <= ATH12K_MAX_6G_FREQ) {
 		status->band = NL80211_BAND_6GHZ;
+		status->freq = rx_ev.chan_freq;
 	} else if (rx_ev.channel >= 1 && rx_ev.channel <= 14) {
 		status->band = NL80211_BAND_2GHZ;
 	} else if (rx_ev.channel >= 36 && rx_ev.channel <= ATH12K_MAX_5G_CHAN) {
@@ -5899,8 +5901,10 @@ static void ath12k_mgmt_rx_event(struct ath12k_base *ab, struct sk_buff *skb)
 
 	sband = &ar->mac.sbands[status->band];
 
-	status->freq = ieee80211_channel_to_frequency(rx_ev.channel,
-						      status->band);
+	if (status->band != NL80211_BAND_6GHZ)
+		status->freq = ieee80211_channel_to_frequency(rx_ev.channel,
+							      status->band);
+
 	status->signal = rx_ev.snr + ATH12K_DEFAULT_NOISE_FLOOR;
 	status->rate_idx = ath12k_mac_bitrate_to_idx(sband, rx_ev.rate / 100);
 
-- 
2.17.1

[PATCH 3/6] wifi: ath12k: fix survey dump collection in 6 GHz

[Pradeep Kumar Chitrapu]

When ath12k receives survey request, choose the 6 GHz band
when enabled. Without this, survey requests do not include
any 6 GHz band results, leading to failures in auto channel
selection.

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

Signed-off-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/mac.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index b91d34b602dd..6d7df18ec424 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -7419,7 +7419,13 @@ static int ath12k_mac_op_get_survey(struct ieee80211_hw *hw, int idx,
 
 	if (!sband)
 		sband = hw->wiphy->bands[NL80211_BAND_5GHZ];
+	if (sband && idx >= sband->n_channels) {
+		idx -= sband->n_channels;
+		sband = NULL;
+	}
 
+	if (!sband)
+		sband = hw->wiphy->bands[NL80211_BAND_6GHZ];
 	if (!sband || idx >= sband->n_channels) {
 		ret = -ENOENT;
 		goto exit;
-- 
2.17.1

[PATCH 4/6] wifi: ath12k: add 6 GHz params in peer assoc command

[Pradeep Kumar Chitrapu]

Currently A-MPDU aggregation parameters are not being configured
during peer association for 6 GHz band. Hence, extract these
parameters from station's capabilities received in association
request and send to firmware. Without this, A-MPDU aggregation
is not happening in 6 GHz band.

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

Co-developed-by: Avula Sri Charan <quic_asrichar@quicinc.com>
Signed-off-by: Avula Sri Charan <quic_asrichar@quicinc.com>
Signed-off-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/mac.c | 56 ++++++++++++++++++++++++++-
 1 file changed, 55 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 6d7df18ec424..7e296140439a 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -1910,6 +1910,59 @@ static void ath12k_peer_assoc_h_he(struct ath12k *ar,
 	}
 }
 
+static void ath12k_peer_assoc_h_he_6ghz(struct ath12k *ar,
+					struct ieee80211_vif *vif,
+					struct ieee80211_sta *sta,
+					struct ath12k_wmi_peer_assoc_arg *arg)
+{
+	const struct ieee80211_sta_he_cap *he_cap = &sta->deflink.he_cap;
+	struct cfg80211_chan_def def;
+	enum nl80211_band band;
+	u8  ampdu_factor;
+
+	if (WARN_ON(ath12k_mac_vif_chan(vif, &def)))
+		return;
+
+	band = def.chan->band;
+
+	if (!arg->he_flag || band != NL80211_BAND_6GHZ || !sta->deflink.he_6ghz_capa.capa)
+		return;
+
+	if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_40)
+		arg->bw_40 = true;
+
+	if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_80)
+		arg->bw_80 = true;
+
+	if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_160)
+		arg->bw_160 = true;
+
+	if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_320)
+		arg->bw_320 = true;
+
+	arg->peer_he_caps_6ghz = le16_to_cpu(sta->deflink.he_6ghz_capa.capa);
+	arg->peer_mpdu_density =
+		ath12k_parse_mpdudensity(u32_get_bits(arg->peer_he_caps_6ghz,
+						      IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START));
+
+	/* From IEEE Std 802.11ax-2021 - Section 10.12.2: An HE STA shall be capable of
+	 * receiving A-MPDU where the A-MPDU pre-EOF padding length is up to the value
+	 * indicated by the Maximum A-MPDU Length Exponent Extension field in the HE
+	 * Capabilities element and the Maximum A-MPDU Length Exponent field in HE 6 GHz
+	 * Band Capabilities element in the 6 GHz band.
+	 *
+	 * Here, we are extracting the Max A-MPDU Exponent Extension from HE caps and
+	 * factor is the Maximum A-MPDU Length Exponent from HE 6 GHZ Band capability.
+	 */
+	ampdu_factor = u8_get_bits(he_cap->he_cap_elem.mac_cap_info[3],
+				   IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK) +
+			u32_get_bits(arg->peer_he_caps_6ghz,
+				     IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP);
+
+	arg->peer_max_mpdu = (1u << (IEEE80211_HE_6GHZ_MAX_AMPDU_FACTOR +
+				     ampdu_factor)) - 1;
+}
+
 static void ath12k_peer_assoc_h_smps(struct ieee80211_sta *sta,
 				     struct ath12k_wmi_peer_assoc_arg *arg)
 {
@@ -2382,6 +2435,7 @@ static void ath12k_peer_assoc_prepare(struct ath12k *ar,
 	ath12k_peer_assoc_h_ht(ar, vif, sta, arg);
 	ath12k_peer_assoc_h_vht(ar, vif, sta, arg);
 	ath12k_peer_assoc_h_he(ar, vif, sta, arg);
+	ath12k_peer_assoc_h_he_6ghz(ar, vif, sta, arg);
 	ath12k_peer_assoc_h_eht(ar, vif, sta, arg);
 	ath12k_peer_assoc_h_qos(ar, vif, sta, arg);
 	ath12k_peer_assoc_h_phymode(ar, vif, sta, arg);
@@ -8029,7 +8083,7 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah)
 	ieee80211_hw_set(hw, SUPPORTS_TX_FRAG);
 	ieee80211_hw_set(hw, REPORTS_LOW_ACK);
 
-	if (ht_cap & WMI_HT_CAP_ENABLED) {
+	if ((ht_cap & WMI_HT_CAP_ENABLED) || ar->supports_6ghz) {
 		ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 		ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
 		ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
-- 
2.17.1

[PATCH 5/6] wifi: ath12k: refactor smps configuration

[Pradeep Kumar Chitrapu]

Move fetching smps value to a new function and use u16_get_bits
to extract smps value from capabilities. This will help in
extending the functionality when SMPS support in 6 GHz band gets
added in subsequent patches.

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

Signed-off-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/mac.c | 32 ++++++++++++++++-----------
 1 file changed, 19 insertions(+), 13 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 7e296140439a..b4114dd22bf0 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -1963,18 +1963,29 @@ static void ath12k_peer_assoc_h_he_6ghz(struct ath12k *ar,
 				     ampdu_factor)) - 1;
 }
 
+static inline int ath12k_get_smps_from_capa(const struct ieee80211_sta_ht_cap *ht_cap,
+					    int *smps)
+{
+	if (!ht_cap->ht_supported)
+		return -EOPNOTSUPP;
+
+	*smps = u16_get_bits(ht_cap->cap, IEEE80211_HT_CAP_SM_PS);
+
+	if (*smps >= ARRAY_SIZE(ath12k_smps_map))
+		return -EINVAL;
+
+	return 0;
+}
+
 static void ath12k_peer_assoc_h_smps(struct ieee80211_sta *sta,
 				     struct ath12k_wmi_peer_assoc_arg *arg)
 {
 	const struct ieee80211_sta_ht_cap *ht_cap = &sta->deflink.ht_cap;
 	int smps;
 
-	if (!ht_cap->ht_supported)
+	if (ath12k_get_smps_from_capa(ht_cap, &smps))
 		return;
 
-	smps = ht_cap->cap & IEEE80211_HT_CAP_SM_PS;
-	smps >>= IEEE80211_HT_CAP_SM_PS_SHIFT;
-
 	switch (smps) {
 	case WLAN_HT_CAP_SM_PS_STATIC:
 		arg->static_mimops_flag = true;
@@ -2448,16 +2459,11 @@ static int ath12k_setup_peer_smps(struct ath12k *ar, struct ath12k_vif *arvif,
 				  const u8 *addr,
 				  const struct ieee80211_sta_ht_cap *ht_cap)
 {
-	int smps;
+	int smps, ret = 0;
 
-	if (!ht_cap->ht_supported)
-		return 0;
-
-	smps = ht_cap->cap & IEEE80211_HT_CAP_SM_PS;
-	smps >>= IEEE80211_HT_CAP_SM_PS_SHIFT;
-
-	if (smps >= ARRAY_SIZE(ath12k_smps_map))
-		return -EINVAL;
+	ret = ath12k_get_smps_from_capa(ht_cap, &smps);
+	if (ret < 0)
+		return ret;
 
 	return ath12k_wmi_set_peer_param(ar, addr, arvif->vdev_id,
 					 WMI_PEER_MIMO_PS_STATE,
-- 
2.17.1

[PATCH 6/6] wifi: ath12k: support SMPS configuration for 6 GHz

[Pradeep Kumar Chitrapu]

Parse SMPS configuration from IEs and configure. Without this,
SMPS is not enabled for 6 GHz band.

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

Signed-off-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/mac.c | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index b4114dd22bf0..433b8be74997 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -1964,12 +1964,17 @@ static void ath12k_peer_assoc_h_he_6ghz(struct ath12k *ar,
 }
 
 static inline int ath12k_get_smps_from_capa(const struct ieee80211_sta_ht_cap *ht_cap,
+					    const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
 					    int *smps)
 {
-	if (!ht_cap->ht_supported)
+	if (!ht_cap->ht_supported && !he_6ghz_capa->capa)
 		return -EOPNOTSUPP;
 
-	*smps = u16_get_bits(ht_cap->cap, IEEE80211_HT_CAP_SM_PS);
+	if (ht_cap->ht_supported)
+		*smps = u16_get_bits(ht_cap->cap, IEEE80211_HT_CAP_SM_PS);
+	else
+		*smps = le16_get_bits(he_6ghz_capa->capa,
+				      IEEE80211_HE_6GHZ_CAP_SM_PS);
 
 	if (*smps >= ARRAY_SIZE(ath12k_smps_map))
 		return -EINVAL;
@@ -1980,10 +1985,11 @@ static inline int ath12k_get_smps_from_capa(const struct ieee80211_sta_ht_cap *h
 static void ath12k_peer_assoc_h_smps(struct ieee80211_sta *sta,
 				     struct ath12k_wmi_peer_assoc_arg *arg)
 {
+	const struct ieee80211_he_6ghz_capa *he_6ghz_capa = &sta->deflink.he_6ghz_capa;
 	const struct ieee80211_sta_ht_cap *ht_cap = &sta->deflink.ht_cap;
 	int smps;
 
-	if (ath12k_get_smps_from_capa(ht_cap, &smps))
+	if (ath12k_get_smps_from_capa(ht_cap, he_6ghz_capa, &smps))
 		return;
 
 	switch (smps) {
@@ -2457,11 +2463,12 @@ static void ath12k_peer_assoc_prepare(struct ath12k *ar,
 
 static int ath12k_setup_peer_smps(struct ath12k *ar, struct ath12k_vif *arvif,
 				  const u8 *addr,
-				  const struct ieee80211_sta_ht_cap *ht_cap)
+				  const struct ieee80211_sta_ht_cap *ht_cap,
+				  const struct ieee80211_he_6ghz_capa *he_6ghz_capa)
 {
 	int smps, ret = 0;
 
-	ret = ath12k_get_smps_from_capa(ht_cap, &smps);
+	ret = ath12k_get_smps_from_capa(ht_cap, he_6ghz_capa, &smps);
 	if (ret < 0)
 		return ret;
 
@@ -2514,7 +2521,8 @@ static void ath12k_bss_assoc(struct ath12k *ar,
 	}
 
 	ret = ath12k_setup_peer_smps(ar, arvif, bss_conf->bssid,
-				     &ap_sta->deflink.ht_cap);
+				     &ap_sta->deflink.ht_cap,
+				     &ap_sta->deflink.he_6ghz_capa);
 	if (ret) {
 		ath12k_warn(ar->ab, "failed to setup peer SMPS for vdev %d: %d\n",
 			    arvif->vdev_id, ret);
@@ -3677,7 +3685,8 @@ static int ath12k_station_assoc(struct ath12k *ar,
 		return 0;
 
 	ret = ath12k_setup_peer_smps(ar, arvif, sta->addr,
-				     &sta->deflink.ht_cap);
+				     &sta->deflink.ht_cap,
+				     &sta->deflink.he_6ghz_capa);
 	if (ret) {
 		ath12k_warn(ar->ab, "failed to setup peer SMPS for vdev %d: %d\n",
 			    arvif->vdev_id, ret);
@@ -8104,7 +8113,7 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah)
 	 * 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)
+	if (ht_cap & WMI_HT_CAP_DYNAMIC_SMPS || ar->supports_6ghz)
 		wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
 
 	wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID;
-- 
2.17.1

Re: [PATCH 6/6] wifi: ath12k: support SMPS configuration for 6 GHz

[Baochen Qiang]

On 3/26/2024 5:23 AM, Pradeep Kumar Chitrapu wrote:
> Parse SMPS configuration from IEs and configure. Without this,
> SMPS is not enabled for 6 GHz band.
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
> 
> Signed-off-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
> ---
>   drivers/net/wireless/ath/ath12k/mac.c | 25 +++++++++++++++++--------
>   1 file changed, 17 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
> index b4114dd22bf0..433b8be74997 100644
> --- a/drivers/net/wireless/ath/ath12k/mac.c
> +++ b/drivers/net/wireless/ath/ath12k/mac.c
> @@ -1964,12 +1964,17 @@ static void ath12k_peer_assoc_h_he_6ghz(struct ath12k *ar,
>   }
>   
>   static inline int ath12k_get_smps_from_capa(const struct ieee80211_sta_ht_cap *ht_cap,
> +					    const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
>   					    int *smps)
>   {
> -	if (!ht_cap->ht_supported)
> +	if (!ht_cap->ht_supported && !he_6ghz_capa->capa)
>   		return -EOPNOTSUPP;
>   
> -	*smps = u16_get_bits(ht_cap->cap, IEEE80211_HT_CAP_SM_PS);
> +	if (ht_cap->ht_supported)
> +		*smps = u16_get_bits(ht_cap->cap, IEEE80211_HT_CAP_SM_PS);
> +	else
> +		*smps = le16_get_bits(he_6ghz_capa->capa,
> +				      IEEE80211_HE_6GHZ_CAP_SM_PS);
>   
>   	if (*smps >= ARRAY_SIZE(ath12k_smps_map))
>   		return -EINVAL;
> @@ -1980,10 +1985,11 @@ static inline int ath12k_get_smps_from_capa(const struct ieee80211_sta_ht_cap *h
>   static void ath12k_peer_assoc_h_smps(struct ieee80211_sta *sta,
>   				     struct ath12k_wmi_peer_assoc_arg *arg)
>   {
> +	const struct ieee80211_he_6ghz_capa *he_6ghz_capa = &sta->deflink.he_6ghz_capa;
>   	const struct ieee80211_sta_ht_cap *ht_cap = &sta->deflink.ht_cap;
>   	int smps;
>   
> -	if (ath12k_get_smps_from_capa(ht_cap, &smps))
> +	if (ath12k_get_smps_from_capa(ht_cap, he_6ghz_capa, &smps))
>   		return;
>   
>   	switch (smps) {
> @@ -2457,11 +2463,12 @@ static void ath12k_peer_assoc_prepare(struct ath12k *ar,
>   
>   static int ath12k_setup_peer_smps(struct ath12k *ar, struct ath12k_vif *arvif,
>   				  const u8 *addr,
> -				  const struct ieee80211_sta_ht_cap *ht_cap)
> +				  const struct ieee80211_sta_ht_cap *ht_cap,
> +				  const struct ieee80211_he_6ghz_capa *he_6ghz_capa)
>   {
>   	int smps, ret = 0;
>   
> -	ret = ath12k_get_smps_from_capa(ht_cap, &smps);
> +	ret = ath12k_get_smps_from_capa(ht_cap, he_6ghz_capa, &smps);
>   	if (ret < 0)
>   		return ret;
>   
> @@ -2514,7 +2521,8 @@ static void ath12k_bss_assoc(struct ath12k *ar,
>   	}
>   
>   	ret = ath12k_setup_peer_smps(ar, arvif, bss_conf->bssid,
> -				     &ap_sta->deflink.ht_cap);
> +				     &ap_sta->deflink.ht_cap,
> +				     &ap_sta->deflink.he_6ghz_capa);
>   	if (ret) {
>   		ath12k_warn(ar->ab, "failed to setup peer SMPS for vdev %d: %d\n",
>   			    arvif->vdev_id, ret);
> @@ -3677,7 +3685,8 @@ static int ath12k_station_assoc(struct ath12k *ar,
>   		return 0;
>   
>   	ret = ath12k_setup_peer_smps(ar, arvif, sta->addr,
> -				     &sta->deflink.ht_cap);
> +				     &sta->deflink.ht_cap,
> +				     &sta->deflink.he_6ghz_capa);
>   	if (ret) {
>   		ath12k_warn(ar->ab, "failed to setup peer SMPS for vdev %d: %d\n",
>   			    arvif->vdev_id, ret);
> @@ -8104,7 +8113,7 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah)
>   	 * 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)
> +	if (ht_cap & WMI_HT_CAP_DYNAMIC_SMPS || ar->supports_6ghz)
WCN7850 supports 6 GHz but it does not support feature 
NL80211_FEATURE_DYNAMIC_SMPS. Enabling this for WCN7850 can lead to 
MU-MIMO test failures.

>   		wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
>   
>   	wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID;

Re: [PATCH 0/6] bug fixes and enhancements to 6 GHz band support

[Kalle Valo]

Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com> writes:

> In 6 GHz band, add support for
> 1. channel 2.
> 2. Fix packet drop issues.
> 3. AMPDU aggregation
> 4. SMPS configuration
>
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Baochen already commented on patch 6 but in general I don't see any
analysis how this patches affects (or works) with WCN7850. I should not
be asking about this for every patch, the analysis should be in the
commit message by default.

-- 
https://patchwork.kernel.org/project/linux-wireless/list/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

Re: [PATCH 6/6] wifi: ath12k: support SMPS configuration for 6 GHz

[Pradeep Kumar Chitrapu]

On 3/25/2024 8:38 PM, Baochen Qiang wrote:
> 
> 
> On 3/26/2024 5:23 AM, Pradeep Kumar Chitrapu wrote:
>> Parse SMPS configuration from IEs and configure. Without this,
>> SMPS is not enabled for 6 GHz band.
>>
>> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
>>
>> Signed-off-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
>> ---
>>   drivers/net/wireless/ath/ath12k/mac.c | 25 +++++++++++++++++--------
>>   1 file changed, 17 insertions(+), 8 deletions(-)
>>
>> diff --git a/drivers/net/wireless/ath/ath12k/mac.c 
>> b/drivers/net/wireless/ath/ath12k/mac.c
>> index b4114dd22bf0..433b8be74997 100644
>> --- a/drivers/net/wireless/ath/ath12k/mac.c
>> +++ b/drivers/net/wireless/ath/ath12k/mac.c
>> @@ -1964,12 +1964,17 @@ static void ath12k_peer_assoc_h_he_6ghz(struct 
>> ath12k *ar,
>>   }
>>   static inline int ath12k_get_smps_from_capa(const struct 
>> ieee80211_sta_ht_cap *ht_cap,
>> +                        const struct ieee80211_he_6ghz_capa 
>> *he_6ghz_capa,
>>                           int *smps)
>>   {
>> -    if (!ht_cap->ht_supported)
>> +    if (!ht_cap->ht_supported && !he_6ghz_capa->capa)
>>           return -EOPNOTSUPP;
>> -    *smps = u16_get_bits(ht_cap->cap, IEEE80211_HT_CAP_SM_PS);
>> +    if (ht_cap->ht_supported)
>> +        *smps = u16_get_bits(ht_cap->cap, IEEE80211_HT_CAP_SM_PS);
>> +    else
>> +        *smps = le16_get_bits(he_6ghz_capa->capa,
>> +                      IEEE80211_HE_6GHZ_CAP_SM_PS);
>>       if (*smps >= ARRAY_SIZE(ath12k_smps_map))
>>           return -EINVAL;
>> @@ -1980,10 +1985,11 @@ static inline int 
>> ath12k_get_smps_from_capa(const struct ieee80211_sta_ht_cap *h
>>   static void ath12k_peer_assoc_h_smps(struct ieee80211_sta *sta,
>>                        struct ath12k_wmi_peer_assoc_arg *arg)
>>   {
>> +    const struct ieee80211_he_6ghz_capa *he_6ghz_capa = 
>> &sta->deflink.he_6ghz_capa;
>>       const struct ieee80211_sta_ht_cap *ht_cap = &sta->deflink.ht_cap;
>>       int smps;
>> -    if (ath12k_get_smps_from_capa(ht_cap, &smps))
>> +    if (ath12k_get_smps_from_capa(ht_cap, he_6ghz_capa, &smps))
>>           return;
>>       switch (smps) {
>> @@ -2457,11 +2463,12 @@ static void ath12k_peer_assoc_prepare(struct 
>> ath12k *ar,
>>   static int ath12k_setup_peer_smps(struct ath12k *ar, struct 
>> ath12k_vif *arvif,
>>                     const u8 *addr,
>> -                  const struct ieee80211_sta_ht_cap *ht_cap)
>> +                  const struct ieee80211_sta_ht_cap *ht_cap,
>> +                  const struct ieee80211_he_6ghz_capa *he_6ghz_capa)
>>   {
>>       int smps, ret = 0;
>> -    ret = ath12k_get_smps_from_capa(ht_cap, &smps);
>> +    ret = ath12k_get_smps_from_capa(ht_cap, he_6ghz_capa, &smps);
>>       if (ret < 0)
>>           return ret;
>> @@ -2514,7 +2521,8 @@ static void ath12k_bss_assoc(struct ath12k *ar,
>>       }
>>       ret = ath12k_setup_peer_smps(ar, arvif, bss_conf->bssid,
>> -                     &ap_sta->deflink.ht_cap);
>> +                     &ap_sta->deflink.ht_cap,
>> +                     &ap_sta->deflink.he_6ghz_capa);
>>       if (ret) {
>>           ath12k_warn(ar->ab, "failed to setup peer SMPS for vdev %d: 
>> %d\n",
>>                   arvif->vdev_id, ret);
>> @@ -3677,7 +3685,8 @@ static int ath12k_station_assoc(struct ath12k *ar,
>>           return 0;
>>       ret = ath12k_setup_peer_smps(ar, arvif, sta->addr,
>> -                     &sta->deflink.ht_cap);
>> +                     &sta->deflink.ht_cap,
>> +                     &sta->deflink.he_6ghz_capa);
>>       if (ret) {
>>           ath12k_warn(ar->ab, "failed to setup peer SMPS for vdev %d: 
>> %d\n",
>>                   arvif->vdev_id, ret);
>> @@ -8104,7 +8113,7 @@ static int ath12k_mac_hw_register(struct 
>> ath12k_hw *ah)
>>        * 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)
>> +    if (ht_cap & WMI_HT_CAP_DYNAMIC_SMPS || ar->supports_6ghz)
> WCN7850 supports 6 GHz but it does not support feature 
> NL80211_FEATURE_DYNAMIC_SMPS. Enabling this for WCN7850 can lead to 
> MU-MIMO test failures.
> 
>>           wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
>>       wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID;

Thanks Baochen

will address this in next revision..
can you please let me know if WCN7850 firmware advertises any capability 
flag for this?
If not, I am planning to use hw_params for differentiating feature 
support. I will further look and update in next revision.

Thanks
Pradeep

Re: [PATCH 0/6] bug fixes and enhancements to 6 GHz band support

[Pradeep Kumar Chitrapu]

On 3/26/2024 8:23 AM, Kalle Valo wrote:
> Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com> writes:
> 
>> In 6 GHz band, add support for
>> 1. channel 2.
>> 2. Fix packet drop issues.
>> 3. AMPDU aggregation
>> 4. SMPS configuration
>>
>> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
> 
> Baochen already commented on patch 6 but in general I don't see any
> analysis how this patches affects (or works) with WCN7850. I should not
> be asking about this for every patch, the analysis should be in the
> commit message by default.
> 
Sure Kalle..
Will address this in next revision.

Re: [PATCH 4/6] wifi: ath12k: add 6 GHz params in peer assoc command

[Jeff Johnson]

On 3/25/2024 2:23 PM, Pradeep Kumar Chitrapu wrote:
> Currently A-MPDU aggregation parameters are not being configured
> during peer association for 6 GHz band. Hence, extract these
> parameters from station's capabilities received in association
> request and send to firmware. Without this, A-MPDU aggregation
> is not happening in 6 GHz band.
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
> 
> Co-developed-by: Avula Sri Charan <quic_asrichar@quicinc.com>
> Signed-off-by: Avula Sri Charan <quic_asrichar@quicinc.com>
> Signed-off-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
> ---
>  drivers/net/wireless/ath/ath12k/mac.c | 56 ++++++++++++++++++++++++++-
>  1 file changed, 55 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
> index 6d7df18ec424..7e296140439a 100644
> --- a/drivers/net/wireless/ath/ath12k/mac.c
> +++ b/drivers/net/wireless/ath/ath12k/mac.c
> @@ -1910,6 +1910,59 @@ static void ath12k_peer_assoc_h_he(struct ath12k *ar,
>  	}
>  }
>  
> +static void ath12k_peer_assoc_h_he_6ghz(struct ath12k *ar,
> +					struct ieee80211_vif *vif,
> +					struct ieee80211_sta *sta,
> +					struct ath12k_wmi_peer_assoc_arg *arg)
> +{
> +	const struct ieee80211_sta_he_cap *he_cap = &sta->deflink.he_cap;
> +	struct cfg80211_chan_def def;
> +	enum nl80211_band band;
> +	u8  ampdu_factor;
> +
> +	if (WARN_ON(ath12k_mac_vif_chan(vif, &def)))
> +		return;
> +
> +	band = def.chan->band;
> +
> +	if (!arg->he_flag || band != NL80211_BAND_6GHZ || !sta->deflink.he_6ghz_capa.capa)
> +		return;
> +
> +	if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_40)
> +		arg->bw_40 = true;
> +
> +	if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_80)
> +		arg->bw_80 = true;
> +
> +	if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_160)
> +		arg->bw_160 = true;
> +
> +	if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_320)
> +		arg->bw_320 = true;
> +
> +	arg->peer_he_caps_6ghz = le16_to_cpu(sta->deflink.he_6ghz_capa.capa);
> +	arg->peer_mpdu_density =
> +		ath12k_parse_mpdudensity(u32_get_bits(arg->peer_he_caps_6ghz,
> +						      IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START));

ath12k-check complains:
drivers/net/wireless/ath/ath12k/mac.c:1946: line length of 93 exceeds 90 columns

git blame flags:
b2b50e659028d (Pradeep Kumar Chitrapu 2024-03-25 14:23:02 -0700 1946)                IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START));

perhaps use a local variable to hold the u32_get_bits() value?

Re: [PATCH 6/6] wifi: ath12k: support SMPS configuration for 6 GHz

[Jeff Johnson]

On 3/25/2024 2:23 PM, Pradeep Kumar Chitrapu wrote:
> Parse SMPS configuration from IEs and configure. Without this,
> SMPS is not enabled for 6 GHz band.
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
> 
> Signed-off-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
> ---
>  drivers/net/wireless/ath/ath12k/mac.c | 25 +++++++++++++++++--------
>  1 file changed, 17 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
> index b4114dd22bf0..433b8be74997 100644
> --- a/drivers/net/wireless/ath/ath12k/mac.c
> +++ b/drivers/net/wireless/ath/ath12k/mac.c
> @@ -1964,12 +1964,17 @@ static void ath12k_peer_assoc_h_he_6ghz(struct ath12k *ar,
>  }
>  
>  static inline int ath12k_get_smps_from_capa(const struct ieee80211_sta_ht_cap *ht_cap,
> +					    const struct ieee80211_he_6ghz_capa *he_6ghz_capa,

ath12k-check complains:
drivers/net/wireless/ath/ath12k/mac.c:1967: line length of 94 exceeds 90 columns

git blame indicates:
bf5622d2fd27a (Pradeep Kumar Chitrapu 2024-03-25 14:23:04 -0700 1967)              const struct ieee80211_he_6ghz_capa *he_6ghz_capa,

Suggest removing 'inline' to align with:
https://www.kernel.org/doc/html/latest/process/coding-style.html#the-inline-disease