[PATCH 1/2] ath11k: add support for setting fixed HE rate/gi/ltf

* [PATCH 1/2] ath11k: add support for setting fixed HE rate/gi/ltf
@ 2021-07-21 17:36 ` Jouni Malinen
  0 siblings, 0 replies; 6+ messages in thread
From: Jouni Malinen @ 2021-07-21 17:36 UTC (permalink / raw)
  To: Kalle Valo
  Cc: ath11k, linux-wireless, Miles Hu, Aloka Dixit, Lavanya Suresh,
	Pradeep Chitrapu, Venkateswara Naralasetty, Jouni Malinen

From: Miles Hu <milehu@codeaurora.org>

Support setting fixed HE rate/gi/ltf values that we are now able to send
to the kernel using nl80211. The added code is reusing parts of the
existing code path already used for HT/VHT. The new helpers are
symmetric to how we do it for HT/VHT.

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.5.0.1-00235-QCAHKSWPL_SILICONZ-1

Signed-off-by: Miles Hu <milehu@codeaurora.org>
Co-developed-by: Aloka Dixit <alokad@codeaurora.org>
Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
Co-developed-by: Lavanya Suresh <lavaks@codeaurora.org>
Signed-off-by: Lavanya Suresh <lavaks@codeaurora.org>
Co-developed-by: Pradeep Chitrapu <pradeepc@codeaurora.org>
Signed-off-by: Pradeep Chitrapu <pradeepc@codeaurora.org>
Signed-off-by: Venkateswara Naralasetty <vnaralas@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
---
 drivers/net/wireless/ath/ath11k/mac.c | 586 ++++++++++++++++++++++++--
 drivers/net/wireless/ath/ath11k/wmi.c |   4 +-
 drivers/net/wireless/ath/ath11k/wmi.h |  20 +
 3 files changed, 570 insertions(+), 40 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index b9d4e8914482..4dcc1b377642 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -354,6 +354,18 @@ ath11k_mac_max_vht_nss(const u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
 	return 1;
 }
 
+static u32
+ath11k_mac_max_he_nss(const u16 he_mcs_mask[NL80211_HE_NSS_MAX])
+{
+	int nss;
+
+	for (nss = NL80211_HE_NSS_MAX - 1; nss >= 0; nss--)
+		if (he_mcs_mask[nss])
+			return nss + 1;
+
+	return 1;
+}
+
 static u8 ath11k_parse_mpdudensity(u8 mpdudensity)
 {
 /* 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
@@ -1391,6 +1403,14 @@ static void ath11k_peer_assoc_h_ht(struct ath11k *ar,
 		arg->peer_rate_caps |= WMI_HOST_RC_CW40_FLAG;
 	}
 
+	/* As firmware handles this two flags (IEEE80211_HT_CAP_SGI_20
+	 * and IEEE80211_HT_CAP_SGI_40) for enabling SGI, we reset
+	 * both flags if guard interval is Default GI
+	 */
+	if (arvif->bitrate_mask.control[band].gi == NL80211_TXRATE_DEFAULT_GI)
+		arg->peer_ht_caps &= ~(IEEE80211_HT_CAP_SGI_20 |
+				IEEE80211_HT_CAP_SGI_40);
+
 	if (arvif->bitrate_mask.control[band].gi != NL80211_TXRATE_FORCE_LGI) {
 		if (ht_cap->cap & (IEEE80211_HT_CAP_SGI_20 |
 		    IEEE80211_HT_CAP_SGI_40))
@@ -1514,10 +1534,11 @@ static void ath11k_peer_assoc_h_vht(struct ath11k *ar,
 	struct ath11k_vif *arvif = (void *)vif->drv_priv;
 	struct cfg80211_chan_def def;
 	enum nl80211_band band;
-	const u16 *vht_mcs_mask;
+	u16 *vht_mcs_mask;
 	u8 ampdu_factor;
 	u8 max_nss, vht_mcs;
-	int i;
+	int i, vht_nss, nss_idx;
+	bool user_rate_valid = true;
 
 	if (WARN_ON(ath11k_mac_vif_chan(vif, &def)))
 		return;
@@ -1560,6 +1581,24 @@ static void ath11k_peer_assoc_h_vht(struct ath11k *ar,
 	if (sta->bandwidth == IEEE80211_STA_RX_BW_160)
 		arg->bw_160 = true;
 
+	vht_nss =  ath11k_mac_max_vht_nss(vht_mcs_mask);
+
+	if (vht_nss > sta->rx_nss) {
+		user_rate_valid = false;
+		for (nss_idx = sta->rx_nss - 1; nss_idx >= 0; nss_idx--) {
+			if (vht_mcs_mask[nss_idx]) {
+				user_rate_valid = true;
+				break;
+			}
+		}
+	}
+
+	if (!user_rate_valid) {
+		ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "Setting vht range MCS value to peer supported nss:%d for peer %pM\n",
+			   sta->rx_nss, sta->addr);
+		vht_mcs_mask[sta->rx_nss - 1] = vht_mcs_mask[vht_nss - 1];
+	}
+
 	/* Calculate peer NSS capability from VHT capabilities if STA
 	 * supports VHT.
 	 */
@@ -1598,18 +1637,100 @@ static void ath11k_peer_assoc_h_vht(struct ath11k *ar,
 	/* TODO: rxnss_override */
 }
 
+static int ath11k_mac_get_max_he_mcs_map(u16 mcs_map, int nss)
+{
+	switch ((mcs_map >> (2 * nss)) & 0x3) {
+	case IEEE80211_HE_MCS_SUPPORT_0_7: return BIT(8) - 1;
+	case IEEE80211_HE_MCS_SUPPORT_0_9: return BIT(10) - 1;
+	case IEEE80211_HE_MCS_SUPPORT_0_11: return BIT(12) - 1;
+	}
+	return 0;
+}
+
+static u16 ath11k_peer_assoc_h_he_limit(u16 tx_mcs_set,
+					const u16 he_mcs_limit[NL80211_HE_NSS_MAX])
+{
+	int idx_limit;
+	int nss;
+	u16 mcs_map;
+	u16 mcs;
+
+	for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
+		mcs_map = ath11k_mac_get_max_he_mcs_map(tx_mcs_set, nss) &
+			he_mcs_limit[nss];
+
+		if (mcs_map)
+			idx_limit = fls(mcs_map) - 1;
+		else
+			idx_limit = -1;
+
+		switch (idx_limit) {
+		case 0 ... 7:
+			mcs = IEEE80211_HE_MCS_SUPPORT_0_7;
+			break;
+		case 8:
+		case 9:
+			mcs = IEEE80211_HE_MCS_SUPPORT_0_9;
+			break;
+		case 10:
+		case 11:
+			mcs = IEEE80211_HE_MCS_SUPPORT_0_11;
+			break;
+		default:
+			WARN_ON(1);
+			fallthrough;
+		case -1:
+			mcs = IEEE80211_HE_MCS_NOT_SUPPORTED;
+			break;
+		}
+
+		tx_mcs_set &= ~(0x3 << (nss * 2));
+		tx_mcs_set |= mcs << (nss * 2);
+	}
+
+	return tx_mcs_set;
+}
+
+static bool
+ath11k_peer_assoc_h_he_masked(const u16 he_mcs_mask[NL80211_HE_NSS_MAX])
+{
+	int nss;
+
+	for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++)
+		if (he_mcs_mask[nss])
+			return false;
+
+	return true;
+}
+
 static void ath11k_peer_assoc_h_he(struct ath11k *ar,
 				   struct ieee80211_vif *vif,
 				   struct ieee80211_sta *sta,
 				   struct peer_assoc_params *arg)
 {
+	struct ath11k_vif *arvif = (void *)vif->drv_priv;
+	struct cfg80211_chan_def def;
 	const struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
 	u8 ampdu_factor;
-	u16 v;
+	enum nl80211_band band;
+	u16 *he_mcs_mask;
+	u8 max_nss, he_mcs;
+	u16 he_tx_mcs = 0, v = 0;
+	int i, he_nss, nss_idx;
+	bool user_rate_valid = true;
+
+	if (WARN_ON(ath11k_mac_vif_chan(vif, &def)))
+		return;
 
 	if (!he_cap->has_he)
 		return;
 
+	band = def.chan->band;
+	he_mcs_mask = arvif->bitrate_mask.control[band].he_mcs;
+
+	if (ath11k_peer_assoc_h_he_masked(he_mcs_mask))
+		return;
+
 	arg->he_flag = true;
 
 	memcpy_and_pad(&arg->peer_he_cap_macinfo,
@@ -1686,25 +1807,48 @@ static void ath11k_peer_assoc_h_he(struct ath11k *ar,
 	if (he_cap->he_cap_elem.mac_cap_info[0] & IEEE80211_HE_MAC_CAP0_TWT_REQ)
 		arg->twt_requester = true;
 
+	he_nss =  ath11k_mac_max_he_nss(he_mcs_mask);
+
+	if (he_nss > sta->rx_nss) {
+		user_rate_valid = false;
+		for (nss_idx = sta->rx_nss - 1; nss_idx >= 0; nss_idx--) {
+			if (he_mcs_mask[nss_idx]) {
+				user_rate_valid = true;
+				break;
+			}
+		}
+	}
+
+	if (!user_rate_valid) {
+		ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "Setting he range MCS value to peer supported nss:%d for peer %pM\n",
+			   sta->rx_nss, sta->addr);
+		he_mcs_mask[sta->rx_nss - 1] = he_mcs_mask[he_nss - 1];
+	}
+
 	switch (sta->bandwidth) {
 	case IEEE80211_STA_RX_BW_160:
 		if (he_cap->he_cap_elem.phy_cap_info[0] &
 		    IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) {
 			v = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80p80);
+			v = ath11k_peer_assoc_h_he_limit(v, he_mcs_mask);
 			arg->peer_he_rx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_80_80] = v;
 
 			v = le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80p80);
 			arg->peer_he_tx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_80_80] = v;
 
 			arg->peer_he_mcs_count++;
+			he_tx_mcs = v;
 		}
 		v = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160);
 		arg->peer_he_rx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_160] = v;
 
 		v = le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_160);
+		v = ath11k_peer_assoc_h_he_limit(v, he_mcs_mask);
 		arg->peer_he_tx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_160] = v;
 
 		arg->peer_he_mcs_count++;
+		if (!he_tx_mcs)
+			he_tx_mcs = v;
 		fallthrough;
 
 	default:
@@ -1712,11 +1856,34 @@ static void ath11k_peer_assoc_h_he(struct ath11k *ar,
 		arg->peer_he_rx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_80] = v;
 
 		v = le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
+		v = ath11k_peer_assoc_h_he_limit(v, he_mcs_mask);
 		arg->peer_he_tx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_80] = v;
 
 		arg->peer_he_mcs_count++;
+		if (!he_tx_mcs)
+			he_tx_mcs = v;
 		break;
 	}
+
+	/* Calculate peer NSS capability from HE capabilities if STA
+	 * supports HE.
+	 */
+	for (i = 0, max_nss = 0, he_mcs = 0; i < NL80211_HE_NSS_MAX; i++) {
+		he_mcs = he_tx_mcs >> (2 * i) & 3;
+
+		/* In case of fixed rates, MCS Range in he_tx_mcs might have
+		 * unsupported range, with he_mcs_mask set, so check either of them
+		 * to find nss.
+		 */
+		if (he_mcs != IEEE80211_HE_MCS_NOT_SUPPORTED ||
+		    he_mcs_mask[i])
+			max_nss = i + 1;
+	}
+	arg->peer_nss = min(sta->rx_nss, max_nss);
+
+	ath11k_dbg(ar->ab, ATH11K_DBG_MAC,
+		   "mac he peer %pM nss %d mcs cnt %d\n",
+		   sta->addr, arg->peer_nss, arg->peer_he_mcs_count);
 }
 
 static void ath11k_peer_assoc_h_smps(struct ieee80211_sta *sta,
@@ -1919,6 +2086,7 @@ static void ath11k_peer_assoc_h_phymode(struct ath11k *ar,
 	enum nl80211_band band;
 	const u8 *ht_mcs_mask;
 	const u16 *vht_mcs_mask;
+	const u16 *he_mcs_mask;
 	enum wmi_phy_mode phymode = MODE_UNKNOWN;
 
 	if (WARN_ON(ath11k_mac_vif_chan(vif, &def)))
@@ -1927,10 +2095,12 @@ static void ath11k_peer_assoc_h_phymode(struct ath11k *ar,
 	band = def.chan->band;
 	ht_mcs_mask = arvif->bitrate_mask.control[band].ht_mcs;
 	vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs;
+	he_mcs_mask = arvif->bitrate_mask.control[band].he_mcs;
 
 	switch (band) {
 	case NL80211_BAND_2GHZ:
-		if (sta->he_cap.has_he) {
+		if (sta->he_cap.has_he &&
+		    !ath11k_peer_assoc_h_he_masked(he_mcs_mask)) {
 			if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
 				phymode = MODE_11AX_HE80_2G;
 			else if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
@@ -1958,7 +2128,8 @@ static void ath11k_peer_assoc_h_phymode(struct ath11k *ar,
 	case NL80211_BAND_5GHZ:
 	case NL80211_BAND_6GHZ:
 		/* Check HE first */
-		if (sta->he_cap.has_he) {
+		if (sta->he_cap.has_he &&
+		    !ath11k_peer_assoc_h_he_masked(he_mcs_mask)) {
 			phymode = ath11k_mac_get_phymode_he(ar, sta);
 		} else if (sta->vht_cap.vht_supported &&
 		    !ath11k_peer_assoc_h_vht_masked(vht_mcs_mask)) {
@@ -3184,6 +3355,20 @@ ath11k_mac_bitrate_mask_num_vht_rates(struct ath11k *ar,
 	return num_rates;
 }
 
+static int
+ath11k_mac_bitrate_mask_num_he_rates(struct ath11k *ar,
+				     enum nl80211_band band,
+				     const struct cfg80211_bitrate_mask *mask)
+{
+	int num_rates = 0;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(mask->control[band].he_mcs); i++)
+		num_rates += hweight16(mask->control[band].he_mcs[i]);
+
+	return num_rates;
+}
+
 static int
 ath11k_mac_set_peer_vht_fixed_rate(struct ath11k_vif *arvif,
 				   struct ieee80211_sta *sta,
@@ -3212,6 +3397,10 @@ ath11k_mac_set_peer_vht_fixed_rate(struct ath11k_vif *arvif,
 		return -EINVAL;
 	}
 
+	/* Avoid updating invalid nss as fixed rate*/
+	if (nss > sta->rx_nss)
+		return -EINVAL;
+
 	ath11k_dbg(ar->ab, ATH11K_DBG_MAC,
 		   "Setting Fixed VHT Rate for peer %pM. Device will not switch to any other selected rates",
 		   sta->addr);
@@ -3230,6 +3419,57 @@ ath11k_mac_set_peer_vht_fixed_rate(struct ath11k_vif *arvif,
 	return ret;
 }
 
+static int
+ath11k_mac_set_peer_he_fixed_rate(struct ath11k_vif *arvif,
+				  struct ieee80211_sta *sta,
+				  const struct cfg80211_bitrate_mask *mask,
+				  enum nl80211_band band)
+{
+	struct ath11k *ar = arvif->ar;
+	u8 he_rate, nss;
+	u32 rate_code;
+	int ret, i;
+
+	lockdep_assert_held(&ar->conf_mutex);
+
+	nss = 0;
+
+	for (i = 0; i < ARRAY_SIZE(mask->control[band].he_mcs); i++) {
+		if (hweight16(mask->control[band].he_mcs[i]) == 1) {
+			nss = i + 1;
+			he_rate = ffs(mask->control[band].he_mcs[i]) - 1;
+		}
+	}
+
+	if (!nss) {
+		ath11k_warn(ar->ab, "No single HE Fixed rate found to set for %pM",
+			    sta->addr);
+		return -EINVAL;
+	}
+
+	/* Avoid updating invalid nss as fixed rate*/
+	if (nss > sta->rx_nss)
+		return -EINVAL;
+
+	ath11k_dbg(ar->ab, ATH11K_DBG_MAC,
+		   "Setting Fixed HE Rate for peer %pM. Device will not switch to any other selected rates",
+		   sta->addr);
+
+	rate_code = ATH11K_HW_RATE_CODE(he_rate, nss - 1,
+					WMI_RATE_PREAMBLE_HE);
+
+	ret = ath11k_wmi_set_peer_param(ar, sta->addr,
+					arvif->vdev_id,
+					WMI_PEER_PARAM_FIXED_RATE,
+					rate_code);
+	if (ret)
+		ath11k_warn(ar->ab,
+			    "failed to update STA %pM Fixed Rate %d: %d\n",
+			    sta->addr, rate_code, ret);
+
+	return ret;
+}
+
 static int ath11k_station_assoc(struct ath11k *ar,
 				struct ieee80211_vif *vif,
 				struct ieee80211_sta *sta,
@@ -3241,7 +3481,7 @@ static int ath11k_station_assoc(struct ath11k *ar,
 	struct cfg80211_chan_def def;
 	enum nl80211_band band;
 	struct cfg80211_bitrate_mask *mask;
-	u8 num_vht_rates;
+	u8 num_vht_rates, num_he_rates;
 
 	lockdep_assert_held(&ar->conf_mutex);
 
@@ -3267,9 +3507,10 @@ static int ath11k_station_assoc(struct ath11k *ar,
 	}
 
 	num_vht_rates = ath11k_mac_bitrate_mask_num_vht_rates(ar, band, mask);
+	num_he_rates = ath11k_mac_bitrate_mask_num_he_rates(ar, band, mask);
 
-	/* If single VHT rate is configured (by set_bitrate_mask()),
-	 * peer_assoc will disable VHT. This is now enabled by a peer specific
+	/* If single VHT/HE rate is configured (by set_bitrate_mask()),
+	 * peer_assoc will disable VHT/HE. This is now enabled by a peer specific
 	 * fixed param.
 	 * Note that all other rates and NSS will be disabled for this peer.
 	 */
@@ -3278,6 +3519,11 @@ static int ath11k_station_assoc(struct ath11k *ar,
 							 band);
 		if (ret)
 			return ret;
+	} else if (sta->he_cap.has_he && num_he_rates == 1) {
+		ret = ath11k_mac_set_peer_he_fixed_rate(arvif, sta, mask,
+							band);
+		if (ret)
+			return ret;
 	}
 
 	/* Re-assoc is run only to update supported rates for given station. It
@@ -3348,8 +3594,9 @@ static void ath11k_sta_rc_update_wk(struct work_struct *wk)
 	enum nl80211_band band;
 	const u8 *ht_mcs_mask;
 	const u16 *vht_mcs_mask;
+	const u16 *he_mcs_mask;
 	u32 changed, bw, nss, smps;
-	int err, num_vht_rates;
+	int err, num_vht_rates, num_he_rates;
 	const struct cfg80211_bitrate_mask *mask;
 	struct peer_assoc_params peer_arg;
 
@@ -3364,6 +3611,7 @@ static void ath11k_sta_rc_update_wk(struct work_struct *wk)
 	band = def.chan->band;
 	ht_mcs_mask = arvif->bitrate_mask.control[band].ht_mcs;
 	vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs;
+	he_mcs_mask = arvif->bitrate_mask.control[band].he_mcs;
 
 	spin_lock_bh(&ar->data_lock);
 
@@ -3379,8 +3627,9 @@ static void ath11k_sta_rc_update_wk(struct work_struct *wk)
 	mutex_lock(&ar->conf_mutex);
 
 	nss = max_t(u32, 1, nss);
-	nss = min(nss, max(ath11k_mac_max_ht_nss(ht_mcs_mask),
-			   ath11k_mac_max_vht_nss(vht_mcs_mask)));
+	nss = min(nss, max(max(ath11k_mac_max_ht_nss(ht_mcs_mask),
+			       ath11k_mac_max_vht_nss(vht_mcs_mask)),
+			   ath11k_mac_max_he_nss(he_mcs_mask)));
 
 	if (changed & IEEE80211_RC_BW_CHANGED) {
 		err = ath11k_wmi_set_peer_param(ar, sta->addr, arvif->vdev_id,
@@ -3416,6 +3665,8 @@ static void ath11k_sta_rc_update_wk(struct work_struct *wk)
 		mask = &arvif->bitrate_mask;
 		num_vht_rates = ath11k_mac_bitrate_mask_num_vht_rates(ar, band,
 								      mask);
+		num_he_rates = ath11k_mac_bitrate_mask_num_he_rates(ar, band,
+								    mask);
 
 		/* Peer_assoc_prepare will reject vht rates in
 		 * bitrate_mask if its not available in range format and
@@ -3431,11 +3682,25 @@ static void ath11k_sta_rc_update_wk(struct work_struct *wk)
 		if (sta->vht_cap.vht_supported && num_vht_rates == 1) {
 			ath11k_mac_set_peer_vht_fixed_rate(arvif, sta, mask,
 							   band);
+		} else if (sta->he_cap.has_he && num_he_rates == 1) {
+			ath11k_mac_set_peer_he_fixed_rate(arvif, sta, mask,
+							  band);
 		} else {
-			/* If the peer is non-VHT or no fixed VHT rate
+			/* If the peer is non-VHT/HE or no fixed VHT/HE rate
 			 * is provided in the new bitrate mask we set the
-			 * other rates using peer_assoc command.
+			 * other rates using peer_assoc command. Also clear
+			 * the peer fixed rate settings as it has higher proprity
+			 * than peer assoc
 			 */
+			err = ath11k_wmi_set_peer_param(ar, sta->addr,
+							arvif->vdev_id,
+							WMI_PEER_PARAM_FIXED_RATE,
+							WMI_FIXED_RATE_NONE);
+			if (err)
+				ath11k_warn(ar->ab,
+					    "failed to disable peer fixed rate for STA %pM ret %d\n",
+					    sta->addr, err);
+
 			ath11k_peer_assoc_prepare(ar, arvif->vif, sta,
 						  &peer_arg, true);
 
@@ -5045,10 +5310,13 @@ static int ath11k_mac_op_add_interface(struct ieee80211_hw *hw,
 
 	for (i = 0; i < ARRAY_SIZE(arvif->bitrate_mask.control); i++) {
 		arvif->bitrate_mask.control[i].legacy = 0xffffffff;
+		arvif->bitrate_mask.control[i].gi = NL80211_TXRATE_FORCE_SGI;
 		memset(arvif->bitrate_mask.control[i].ht_mcs, 0xff,
 		       sizeof(arvif->bitrate_mask.control[i].ht_mcs));
 		memset(arvif->bitrate_mask.control[i].vht_mcs, 0xff,
 		       sizeof(arvif->bitrate_mask.control[i].vht_mcs));
+		memset(arvif->bitrate_mask.control[i].he_mcs, 0xff,
+		       sizeof(arvif->bitrate_mask.control[i].he_mcs));
 	}
 
 	bit = __ffs64(ab->free_vdev_map);
@@ -6086,9 +6354,26 @@ ath11k_mac_has_single_legacy_rate(struct ath11k *ar,
 	if (ath11k_mac_bitrate_mask_num_vht_rates(ar, band, mask))
 		return false;
 
+	if (ath11k_mac_bitrate_mask_num_he_rates(ar, band, mask))
+		return false;
+
 	return num_rates == 1;
 }
 
+static __le16
+ath11k_mac_get_tx_mcs_map(const struct ieee80211_sta_he_cap *he_cap)
+{
+	if (he_cap->he_cap_elem.phy_cap_info[0] &
+	    IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G)
+		return he_cap->he_mcs_nss_supp.tx_mcs_80p80;
+
+	if (he_cap->he_cap_elem.phy_cap_info[0] &
+	    IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G)
+		return he_cap->he_mcs_nss_supp.tx_mcs_160;
+
+	return he_cap->he_mcs_nss_supp.tx_mcs_80;
+}
+
 static bool
 ath11k_mac_bitrate_mask_get_single_nss(struct ath11k *ar,
 				       enum nl80211_band band,
@@ -6097,8 +6382,10 @@ ath11k_mac_bitrate_mask_get_single_nss(struct ath11k *ar,
 {
 	struct ieee80211_supported_band *sband = &ar->mac.sbands[band];
 	u16 vht_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
+	u16 he_mcs_map = 0;
 	u8 ht_nss_mask = 0;
 	u8 vht_nss_mask = 0;
+	u8 he_nss_mask = 0;
 	int i;
 
 	/* No need to consider legacy here. Basic rates are always present
@@ -6125,7 +6412,20 @@ ath11k_mac_bitrate_mask_get_single_nss(struct ath11k *ar,
 			return false;
 	}
 
-	if (ht_nss_mask != vht_nss_mask)
+	he_mcs_map = le16_to_cpu(ath11k_mac_get_tx_mcs_map(&sband->iftype_data->he_cap));
+
+	for (i = 0; i < ARRAY_SIZE(mask->control[band].he_mcs); i++) {
+		if (mask->control[band].he_mcs[i] == 0)
+			continue;
+
+		if (mask->control[band].he_mcs[i] ==
+		    ath11k_mac_get_max_he_mcs_map(he_mcs_map, i))
+			he_nss_mask |= BIT(i);
+		else
+			return false;
+	}
+
+	if (ht_nss_mask != vht_nss_mask || ht_nss_mask != he_nss_mask)
 		return false;
 
 	if (ht_nss_mask == 0)
@@ -6172,42 +6472,128 @@ ath11k_mac_get_single_legacy_rate(struct ath11k *ar,
 	return 0;
 }
 
-static int ath11k_mac_set_fixed_rate_params(struct ath11k_vif *arvif,
-					    u32 rate, u8 nss, u8 sgi, u8 ldpc)
+static int
+ath11k_mac_set_fixed_rate_GI_LTF(struct ath11k_vif *arvif, u8 he_gi, u8 he_ltf)
 {
 	struct ath11k *ar = arvif->ar;
-	u32 vdev_param;
 	int ret;
 
-	lockdep_assert_held(&ar->conf_mutex);
+	/* 0.8 = 0, 1.6 = 2 and 3.2 = 3. */
+	if (he_gi && he_gi != 0xFF)
+		he_gi += 1;
 
-	ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac set fixed rate params vdev %i rate 0x%02x nss %u sgi %u\n",
-		   arvif->vdev_id, rate, nss, sgi);
+	ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
+					    WMI_VDEV_PARAM_SGI, he_gi);
+	if (ret) {
+		ath11k_warn(ar->ab, "failed to set HE GI:%d, error:%d\n",
+			    he_gi, ret);
+		return ret;
+	}
+	/* start from 1 */
+	if (he_ltf != 0xFF)
+		he_ltf += 1;
 
-	vdev_param = WMI_VDEV_PARAM_FIXED_RATE;
 	ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
-					    vdev_param, rate);
+					    WMI_VDEV_PARAM_HE_LTF, he_ltf);
 	if (ret) {
-		ath11k_warn(ar->ab, "failed to set fixed rate param 0x%02x: %d\n",
-			    rate, ret);
+		ath11k_warn(ar->ab, "failed to set HE LTF:%d, error:%d\n",
+			    he_ltf, ret);
 		return ret;
 	}
 
-	vdev_param = WMI_VDEV_PARAM_NSS;
+	return 0;
+}
+
+static int
+ath11k_mac_set_auto_rate_GI_LTF(struct ath11k_vif *arvif, u16 he_gi, u8 he_ltf)
+{
+	struct ath11k *ar = arvif->ar;
+	int ret;
+	u32 he_ar_gi_ltf = 0;
+
+	if (he_gi != 0xFF) {
+		switch (he_gi) {
+		case NL80211_RATE_INFO_HE_GI_0_8:
+			he_gi = WMI_AUTORATE_800NS_GI;
+			break;
+		case NL80211_RATE_INFO_HE_GI_1_6:
+			he_gi = WMI_AUTORATE_1600NS_GI;
+			break;
+		case NL80211_RATE_INFO_HE_GI_3_2:
+			he_gi = WMI_AUTORATE_3200NS_GI;
+			break;
+		default:
+			ath11k_warn(ar->ab, "Invalid GI\n");
+			return -EINVAL;
+		}
+	}
+
+	if (he_ltf != 0xFF) {
+		switch (he_ltf) {
+		case NL80211_RATE_INFO_HE_1XLTF:
+			he_ltf = WMI_HE_AUTORATE_LTF_1X;
+			break;
+		case NL80211_RATE_INFO_HE_2XLTF:
+			he_ltf = WMI_HE_AUTORATE_LTF_2X;
+			break;
+		case NL80211_RATE_INFO_HE_4XLTF:
+			he_ltf = WMI_HE_AUTORATE_LTF_4X;
+			break;
+		default:
+			ath11k_warn(ar->ab, "Invalid LTF\n");
+			return -EINVAL;
+		}
+	}
+
+	he_ar_gi_ltf = he_gi | he_ltf;
 	ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
-					    vdev_param, nss);
+					    WMI_VDEV_PARAM_AUTORATE_MISC_CFG,
+					    he_ar_gi_ltf);
 	if (ret) {
-		ath11k_warn(ar->ab, "failed to set nss param %d: %d\n",
-			    nss, ret);
+		ath11k_warn(ar->ab,
+			    "failed to set HE autorate GI:%u, LTF:%u params, error:%d\n",
+			    he_gi, he_ltf, ret);
 		return ret;
 	}
 
-	vdev_param = WMI_VDEV_PARAM_SGI;
+	return 0;
+}
+
+static int ath11k_mac_set_rate_params(struct ath11k_vif *arvif,
+				      u32 rate, u8 nss, u8 sgi, u8 ldpc,
+				      u8 he_gi, u8 he_ltf, bool he_fixed_rate)
+{
+	struct ath11k *ar = arvif->ar;
+	u32 vdev_param;
+	int ret;
+
+	lockdep_assert_held(&ar->conf_mutex);
+
+	ath11k_dbg(ar->ab, ATH11K_DBG_MAC,
+		   "mac set rate params vdev %i, rate:0x%02x, nss:0x%02x, sgi:0x%02x, ldpc:0x%02x\n",
+		   arvif->vdev_id, rate, nss, sgi, ldpc);
+
+	ath11k_dbg(ar->ab, ATH11K_DBG_MAC,
+		   "he_gi:0x%02x, he_ltf:0x%02x, he_fixed_rate:%d\n", he_gi,
+		   he_ltf, he_fixed_rate);
+
+	if (!arvif->vif->bss_conf.he_support) {
+		vdev_param = WMI_VDEV_PARAM_FIXED_RATE;
+		ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
+						    vdev_param, rate);
+		if (ret) {
+			ath11k_warn(ar->ab, "failed to set fixed rate param 0x%02x: %d\n",
+				    rate, ret);
+			return ret;
+		}
+	}
+
+	vdev_param = WMI_VDEV_PARAM_NSS;
 	ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
-					    vdev_param, sgi);
+					    vdev_param, nss);
 	if (ret) {
-		ath11k_warn(ar->ab, "failed to set sgi param %d: %d\n",
-			    sgi, ret);
+		ath11k_warn(ar->ab, "failed to set nss param %d: %d\n",
+			    nss, ret);
 		return ret;
 	}
 
@@ -6220,6 +6606,27 @@ static int ath11k_mac_set_fixed_rate_params(struct ath11k_vif *arvif,
 		return ret;
 	}
 
+	if (arvif->vif->bss_conf.he_support) {
+		if (he_fixed_rate) {
+			ret = ath11k_mac_set_fixed_rate_GI_LTF(arvif, he_gi,
+							       he_ltf);
+		} else {
+			ret = ath11k_mac_set_auto_rate_GI_LTF(arvif, he_gi,
+							      he_ltf);
+		}
+		if (ret)
+			return ret;
+	} else {
+		vdev_param = WMI_VDEV_PARAM_SGI;
+		ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
+						    vdev_param, sgi);
+		if (ret) {
+			ath11k_warn(ar->ab, "failed to set sgi param %d: %d\n",
+				    sgi, ret);
+			return ret;
+		}
+	}
+
 	return 0;
 }
 
@@ -6248,6 +6655,31 @@ ath11k_mac_vht_mcs_range_present(struct ath11k *ar,
 	return true;
 }
 
+static bool
+ath11k_mac_he_mcs_range_present(struct ath11k *ar,
+				enum nl80211_band band,
+				const struct cfg80211_bitrate_mask *mask)
+{
+	int i;
+	u16 he_mcs;
+
+	for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
+		he_mcs = mask->control[band].he_mcs[i];
+
+		switch (he_mcs) {
+		case 0:
+		case BIT(8) - 1:
+		case BIT(10) - 1:
+		case BIT(12) - 1:
+			break;
+		default:
+			return false;
+		}
+	}
+
+	return true;
+}
+
 static void ath11k_mac_set_bitrate_mask_iter(void *data,
 					     struct ieee80211_sta *sta)
 {
@@ -6279,6 +6711,53 @@ static void ath11k_mac_disable_peer_fixed_rate(void *data,
 			    sta->addr, ret);
 }
 
+static bool
+ath11k_mac_validate_vht_he_fixed_rate_settings(struct ath11k *ar, enum nl80211_band band,
+					       const struct cfg80211_bitrate_mask *mask)
+{
+	bool he_fixed_rate = false, vht_fixed_rate = false;
+	struct ath11k_peer *peer, *tmp;
+	const u16 *vht_mcs_mask, *he_mcs_mask;
+	u8 vht_nss, he_nss;
+	bool ret = true;
+
+	vht_mcs_mask = mask->control[band].vht_mcs;
+	he_mcs_mask = mask->control[band].he_mcs;
+
+	if (ath11k_mac_bitrate_mask_num_vht_rates(ar, band, mask) == 1)
+		vht_fixed_rate = true;
+
+	if (ath11k_mac_bitrate_mask_num_he_rates(ar, band, mask) == 1)
+		he_fixed_rate = true;
+
+	if (!vht_fixed_rate && !he_fixed_rate)
+		return true;
+
+	vht_nss = ath11k_mac_max_vht_nss(vht_mcs_mask);
+	he_nss =  ath11k_mac_max_he_nss(he_mcs_mask);
+
+	rcu_read_lock();
+	spin_lock_bh(&ar->ab->base_lock);
+	list_for_each_entry_safe(peer, tmp, &ar->ab->peers, list) {
+		if (peer->sta) {
+			if (vht_fixed_rate && (!peer->sta->vht_cap.vht_supported ||
+					       peer->sta->rx_nss < vht_nss)) {
+				ret = false;
+				goto exit;
+			}
+			if (he_fixed_rate && (!peer->sta->he_cap.has_he ||
+					      peer->sta->rx_nss < he_nss)) {
+				ret = false;
+				goto exit;
+			}
+		}
+	}
+exit:
+	spin_unlock_bh(&ar->ab->base_lock);
+	rcu_read_unlock();
+	return ret;
+}
+
 static int
 ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
 			       struct ieee80211_vif *vif,
@@ -6290,6 +6769,9 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
 	enum nl80211_band band;
 	const u8 *ht_mcs_mask;
 	const u16 *vht_mcs_mask;
+	const u16 *he_mcs_mask;
+	u8 he_ltf = 0;
+	u8 he_gi = 0;
 	u32 rate;
 	u8 nss;
 	u8 sgi;
@@ -6297,6 +6779,7 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
 	int single_nss;
 	int ret;
 	int num_rates;
+	bool he_fixed_rate = false;
 
 	if (ath11k_mac_vif_chan(vif, &def))
 		return -EPERM;
@@ -6304,12 +6787,16 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
 	band = def.chan->band;
 	ht_mcs_mask = mask->control[band].ht_mcs;
 	vht_mcs_mask = mask->control[band].vht_mcs;
+	he_mcs_mask = mask->control[band].he_mcs;
 	ldpc = !!(ar->ht_cap_info & WMI_HT_CAP_LDPC);
 
 	sgi = mask->control[band].gi;
 	if (sgi == NL80211_TXRATE_FORCE_LGI)
 		return -EINVAL;
 
+	he_gi = mask->control[band].he_gi;
+	he_ltf = mask->control[band].he_ltf;
+
 	/* mac80211 doesn't support sending a fixed HT/VHT MCS alone, rather it
 	 * requires passing atleast one of used basic rates along with them.
 	 * Fixed rate setting across different preambles(legacy, HT, VHT) is
@@ -6333,11 +6820,22 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
 							  &single_nss)) {
 		rate = WMI_FIXED_RATE_NONE;
 		nss = single_nss;
+		mutex_lock(&ar->conf_mutex);
+		arvif->bitrate_mask = *mask;
+		ieee80211_iterate_stations_atomic(ar->hw,
+						  ath11k_mac_set_bitrate_mask_iter,
+						  arvif);
+		mutex_unlock(&ar->conf_mutex);
 	} else {
 		rate = WMI_FIXED_RATE_NONE;
+
+		if (!ath11k_mac_validate_vht_he_fixed_rate_settings(ar, band, mask))
+			ath11k_warn(ar->ab,
+				    "could not update fixed rate settings to all peers due to mcs/nss incompaitiblity\n");
 		nss = min_t(u32, ar->num_tx_chains,
-			    max(ath11k_mac_max_ht_nss(ht_mcs_mask),
-				ath11k_mac_max_vht_nss(vht_mcs_mask)));
+			    max(max(ath11k_mac_max_ht_nss(ht_mcs_mask),
+				    ath11k_mac_max_vht_nss(vht_mcs_mask)),
+				ath11k_mac_max_he_nss(he_mcs_mask)));
 
 		/* If multiple rates across different preambles are given
 		 * we can reconfigure this info with all peers using PEER_ASSOC
@@ -6372,12 +6870,23 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
 			return -EINVAL;
 		}
 
+		num_rates = ath11k_mac_bitrate_mask_num_he_rates(ar, band,
+								 mask);
+		if (num_rates == 1)
+			he_fixed_rate = true;
+
+		if (!ath11k_mac_he_mcs_range_present(ar, band, mask) &&
+		    num_rates > 1) {
+			ath11k_warn(ar->ab,
+				    "Setting more than one HE MCS Value in bitrate mask not supported\n");
+			return -EINVAL;
+		}
+
+		mutex_lock(&ar->conf_mutex);
 		ieee80211_iterate_stations_atomic(ar->hw,
 						  ath11k_mac_disable_peer_fixed_rate,
 						  arvif);
 
-		mutex_lock(&ar->conf_mutex);
-
 		arvif->bitrate_mask = *mask;
 		ieee80211_iterate_stations_atomic(ar->hw,
 						  ath11k_mac_set_bitrate_mask_iter,
@@ -6388,9 +6897,10 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
 
 	mutex_lock(&ar->conf_mutex);
 
-	ret = ath11k_mac_set_fixed_rate_params(arvif, rate, nss, sgi, ldpc);
+	ret = ath11k_mac_set_rate_params(arvif, rate, nss, sgi, ldpc, he_gi,
+					 he_ltf, he_fixed_rate);
 	if (ret) {
-		ath11k_warn(ar->ab, "failed to set fixed rate params on vdev %i: %d\n",
+		ath11k_warn(ar->ab, "failed to set rate params on vdev %i: %d\n",
 			    arvif->vdev_id, ret);
 	}
 
diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c
index e3d11a0a7b7c..330b435e0ed3 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -1904,8 +1904,8 @@ int ath11k_wmi_send_peer_assoc_cmd(struct ath11k *ar,
 				     FIELD_PREP(WMI_TLV_LEN,
 						sizeof(*he_mcs) - TLV_HDR_SIZE);
 
-		he_mcs->rx_mcs_set = param->peer_he_rx_mcs_set[i];
-		he_mcs->tx_mcs_set = param->peer_he_tx_mcs_set[i];
+		he_mcs->rx_mcs_set = param->peer_he_tx_mcs_set[i];
+		he_mcs->tx_mcs_set = param->peer_he_rx_mcs_set[i];
 		ptr += sizeof(*he_mcs);
 	}
 
diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
index 799b3bd96a27..097023a94e06 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -119,6 +119,22 @@ enum {
 	WMI_HOST_WLAN_2G_5G_CAP	= 0x3,
 };
 
+/* Parameters used for WMI_VDEV_PARAM_AUTORATE_MISC_CFG command.
+ * Used only for HE auto rate mode.
+ */
+enum {
+	/* HE LTF related configuration */
+	WMI_HE_AUTORATE_LTF_1X = BIT(0),
+	WMI_HE_AUTORATE_LTF_2X = BIT(1),
+	WMI_HE_AUTORATE_LTF_4X = BIT(2),
+
+	/* HE GI related configuration */
+	WMI_AUTORATE_400NS_GI = BIT(8),
+	WMI_AUTORATE_800NS_GI = BIT(9),
+	WMI_AUTORATE_1600NS_GI = BIT(10),
+	WMI_AUTORATE_3200NS_GI = BIT(11),
+};
+
 /*
  * wmi command groups.
  */
@@ -1044,7 +1060,9 @@ enum wmi_tlv_vdev_param {
 	WMI_VDEV_PARAM_HE_RANGE_EXT,
 	WMI_VDEV_PARAM_ENABLE_BCAST_PROBE_RESPONSE,
 	WMI_VDEV_PARAM_FILS_MAX_CHANNEL_GUARD_TIME,
+	WMI_VDEV_PARAM_HE_LTF = 0x74,
 	WMI_VDEV_PARAM_BA_MODE = 0x7e,
+	WMI_VDEV_PARAM_AUTORATE_MISC_CFG = 0x80,
 	WMI_VDEV_PARAM_SET_HE_SOUNDING_MODE = 0x87,
 	WMI_VDEV_PARAM_6GHZ_PARAMS = 0x99,
 	WMI_VDEV_PARAM_PROTOTYPE = 0x8000,
@@ -3920,7 +3938,9 @@ struct wmi_vht_rate_set {
 
 struct wmi_he_rate_set {
 	u32 tlv_header;
+	/* MCS at which the peer can receive */
 	u32 rx_mcs_set;
+	/* MCS at which the peer can transmit */
 	u32 tx_mcs_set;
 } __packed;
 
-- 
2.25.1


^ permalink raw reply related	[flat|nested] 6+ messages in thread