Merge tag 'wireless-drivers-next-2019-11-22' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
wireless-drivers-next patches for v5.5

Last set of patches for v5.5. Major features here 802.11ax support for
qtnfmac and airtime fairness support to mt76. And naturally smaller
fixes and improvements all over.

Major changes:

qtnfmac

* add 802.11ax support in AP mode

* enable offload bridging support

iwlwifi

* support TX/RX antennas reporting

mt76

* mt7615 smart carrier sense support

* aggregation statistics via debugfs

* airtime fairness (ATF) support

* mt76x0 OF mac address support
====================

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>

1 files changed, 179 insertions, 15 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index 1a2c143b34d0..b9f2a401041a 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -105,7 +105,15 @@ static int mt76_led_init(struct mt76_dev *dev)
 		dev->led_al = of_property_read_bool(np, "led-active-low");
 	}
 
-	return devm_led_classdev_register(dev->dev, &dev->led_cdev);
+	return led_classdev_register(dev->dev, &dev->led_cdev);
+}
+
+static void mt76_led_cleanup(struct mt76_dev *dev)
+{
+	if (!dev->led_cdev.brightness_set && !dev->led_cdev.blink_set)
+		return;
+
+	led_classdev_unregister(&dev->led_cdev);
 }
 
 static void mt76_init_stream_cap(struct mt76_dev *dev,
@@ -180,6 +188,7 @@ mt76_init_sband(struct mt76_dev *dev, struct mt76_sband *msband,
 	sband->bitrates = rates;
 	sband->n_bitrates = n_rates;
 	dev->chandef.chan = &sband->channels[0];
+	dev->chan_state = &msband->chan[0];
 
 	ht_cap = &sband->ht_cap;
 	ht_cap->ht_supported = true;
@@ -306,6 +315,7 @@ int mt76_register_device(struct mt76_dev *dev, bool vht,
 	wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
 
 	wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
+	wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_AIRTIME_FAIRNESS);
 
 	wiphy->available_antennas_tx = dev->antenna_mask;
 	wiphy->available_antennas_rx = dev->antenna_mask;
@@ -327,8 +337,16 @@ int mt76_register_device(struct mt76_dev *dev, bool vht,
 	ieee80211_hw_set(hw, AP_LINK_PS);
 	ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
 	ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
+	ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
 
 	wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
+	wiphy->interface_modes =
+		BIT(NL80211_IFTYPE_STATION) |
+		BIT(NL80211_IFTYPE_AP) |
+#ifdef CONFIG_MAC80211_MESH
+		BIT(NL80211_IFTYPE_MESH_POINT) |
+#endif
+		BIT(NL80211_IFTYPE_ADHOC);
 
 	if (dev->cap.has_2ghz) {
 		ret = mt76_init_sband_2g(dev, rates, n_rates);
@@ -360,6 +378,7 @@ void mt76_unregister_device(struct mt76_dev *dev)
 {
 	struct ieee80211_hw *hw = dev->hw;
 
+	mt76_led_cleanup(dev);
 	mt76_tx_status_check(dev, NULL, true);
 	ieee80211_unregister_hw(hw);
 }
@@ -398,28 +417,64 @@ bool mt76_has_tx_pending(struct mt76_dev *dev)
 }
 EXPORT_SYMBOL_GPL(mt76_has_tx_pending);
 
+static struct mt76_channel_state *
+mt76_channel_state(struct mt76_dev *dev, struct ieee80211_channel *c)
+{
+	struct mt76_sband *msband;
+	int idx;
+
+	if (c->band == NL80211_BAND_2GHZ)
+		msband = &dev->sband_2g;
+	else
+		msband = &dev->sband_5g;
+
+	idx = c - &msband->sband.channels[0];
+	return &msband->chan[idx];
+}
+
+void mt76_update_survey(struct mt76_dev *dev)
+{
+	struct mt76_channel_state *state = dev->chan_state;
+	ktime_t cur_time;
+
+	if (!test_bit(MT76_STATE_RUNNING, &dev->state))
+		return;
+
+	if (dev->drv->update_survey)
+		dev->drv->update_survey(dev);
+
+	cur_time = ktime_get_boottime();
+	state->cc_active += ktime_to_us(ktime_sub(cur_time,
+						  dev->survey_time));
+	dev->survey_time = cur_time;
+
+	if (dev->drv->drv_flags & MT_DRV_SW_RX_AIRTIME) {
+		spin_lock_bh(&dev->cc_lock);
+		state->cc_bss_rx += dev->cur_cc_bss_rx;
+		dev->cur_cc_bss_rx = 0;
+		spin_unlock_bh(&dev->cc_lock);
+	}
+}
+EXPORT_SYMBOL_GPL(mt76_update_survey);
+
 void mt76_set_channel(struct mt76_dev *dev)
 {
 	struct ieee80211_hw *hw = dev->hw;
 	struct cfg80211_chan_def *chandef = &hw->conf.chandef;
-	struct mt76_channel_state *state;
 	bool offchannel = hw->conf.flags & IEEE80211_CONF_OFFCHANNEL;
 	int timeout = HZ / 5;
 
 	wait_event_timeout(dev->tx_wait, !mt76_has_tx_pending(dev), timeout);
-
-	if (dev->drv->update_survey)
-		dev->drv->update_survey(dev);
+	mt76_update_survey(dev);
 
 	dev->chandef = *chandef;
+	dev->chan_state = mt76_channel_state(dev, chandef->chan);
 
 	if (!offchannel)
 		dev->main_chan = chandef->chan;
 
-	if (chandef->chan != dev->main_chan) {
-		state = mt76_channel_state(dev, chandef->chan);
-		memset(state, 0, sizeof(*state));
-	}
+	if (chandef->chan != dev->main_chan)
+		memset(dev->chan_state, 0, sizeof(*dev->chan_state));
 }
 EXPORT_SYMBOL_GPL(mt76_set_channel);
 
@@ -432,8 +487,9 @@ int mt76_get_survey(struct ieee80211_hw *hw, int idx,
 	struct mt76_channel_state *state;
 	int ret = 0;
 
+	mutex_lock(&dev->mutex);
 	if (idx == 0 && dev->drv->update_survey)
-		dev->drv->update_survey(dev);
+		mt76_update_survey(dev);
 
 	sband = &dev->sband_2g;
 	if (idx >= sband->sband.n_channels) {
@@ -441,8 +497,10 @@ int mt76_get_survey(struct ieee80211_hw *hw, int idx,
 		sband = &dev->sband_5g;
 	}
 
-	if (idx >= sband->sband.n_channels)
-		return -ENOENT;
+	if (idx >= sband->sband.n_channels) {
+		ret = -ENOENT;
+		goto out;
+	}
 
 	chan = &sband->sband.channels[idx];
 	state = mt76_channel_state(dev, chan);
@@ -450,14 +508,26 @@ int mt76_get_survey(struct ieee80211_hw *hw, int idx,
 	memset(survey, 0, sizeof(*survey));
 	survey->channel = chan;
 	survey->filled = SURVEY_INFO_TIME | SURVEY_INFO_TIME_BUSY;
-	if (chan == dev->main_chan)
+	survey->filled |= dev->drv->survey_flags;
+	if (chan == dev->main_chan) {
 		survey->filled |= SURVEY_INFO_IN_USE;
 
-	spin_lock_bh(&dev->cc_lock);
-	survey->time = div_u64(state->cc_active, 1000);
+		if (dev->drv->drv_flags & MT_DRV_SW_RX_AIRTIME)
+			survey->filled |= SURVEY_INFO_TIME_BSS_RX;
+	}
+
 	survey->time_busy = div_u64(state->cc_busy, 1000);
+	survey->time_rx = div_u64(state->cc_rx, 1000);
+	survey->time = div_u64(state->cc_active, 1000);
+
+	spin_lock_bh(&dev->cc_lock);
+	survey->time_bss_rx = div_u64(state->cc_bss_rx, 1000);
+	survey->time_tx = div_u64(state->cc_tx, 1000);
 	spin_unlock_bh(&dev->cc_lock);
 
+out:
+	mutex_unlock(&dev->mutex);
+
 	return ret;
 }
 EXPORT_SYMBOL_GPL(mt76_get_survey);
@@ -502,6 +572,7 @@ static struct ieee80211_sta *mt76_rx_convert(struct sk_buff *skb)
 	status->band = mstat.band;
 	status->signal = mstat.signal;
 	status->chains = mstat.chains;
+	status->ampdu_reference = mstat.ampdu_ref;
 
 	BUILD_BUG_ON(sizeof(mstat) > sizeof(skb->cb));
 	BUILD_BUG_ON(sizeof(status->chain_signal) !=
@@ -552,6 +623,84 @@ mt76_check_ccmp_pn(struct sk_buff *skb)
 }
 
 static void
+mt76_airtime_report(struct mt76_dev *dev, struct mt76_rx_status *status,
+		    int len)
+{
+	struct mt76_wcid *wcid = status->wcid;
+	struct ieee80211_sta *sta;
+	u32 airtime;
+
+	airtime = mt76_calc_rx_airtime(dev, status, len);
+	spin_lock(&dev->cc_lock);
+	dev->cur_cc_bss_rx += airtime;
+	spin_unlock(&dev->cc_lock);
+
+	if (!wcid || !wcid->sta)
+		return;
+
+	sta = container_of((void *)wcid, struct ieee80211_sta, drv_priv);
+	ieee80211_sta_register_airtime(sta, status->tid, 0, airtime);
+}
+
+static void
+mt76_airtime_flush_ampdu(struct mt76_dev *dev)
+{
+	struct mt76_wcid *wcid;
+	int wcid_idx;
+
+	if (!dev->rx_ampdu_len)
+		return;
+
+	wcid_idx = dev->rx_ampdu_status.wcid_idx;
+	if (wcid_idx < ARRAY_SIZE(dev->wcid))
+		wcid = rcu_dereference(dev->wcid[wcid_idx]);
+	else
+		wcid = NULL;
+	dev->rx_ampdu_status.wcid = wcid;
+
+	mt76_airtime_report(dev, &dev->rx_ampdu_status, dev->rx_ampdu_len);
+
+	dev->rx_ampdu_len = 0;
+	dev->rx_ampdu_ref = 0;
+}
+
+static void
+mt76_airtime_check(struct mt76_dev *dev, struct sk_buff *skb)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+	struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
+	struct mt76_wcid *wcid = status->wcid;
+
+	if (!(dev->drv->drv_flags & MT_DRV_SW_RX_AIRTIME))
+		return;
+
+	if (!wcid || !wcid->sta) {
+		if (!ether_addr_equal(hdr->addr1, dev->macaddr))
+			return;
+
+		wcid = NULL;
+	}
+
+	if (!(status->flag & RX_FLAG_AMPDU_DETAILS) ||
+	    status->ampdu_ref != dev->rx_ampdu_ref)
+		mt76_airtime_flush_ampdu(dev);
+
+	if (status->flag & RX_FLAG_AMPDU_DETAILS) {
+		if (!dev->rx_ampdu_len ||
+		    status->ampdu_ref != dev->rx_ampdu_ref) {
+			dev->rx_ampdu_status = *status;
+			dev->rx_ampdu_status.wcid_idx = wcid ? wcid->idx : 0xff;
+			dev->rx_ampdu_ref = status->ampdu_ref;
+		}
+
+		dev->rx_ampdu_len += skb->len;
+		return;
+	}
+
+	mt76_airtime_report(dev, status, skb->len);
+}
+
+static void
 mt76_check_sta(struct mt76_dev *dev, struct sk_buff *skb)
 {
 	struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
@@ -567,6 +716,8 @@ mt76_check_sta(struct mt76_dev *dev, struct sk_buff *skb)
 			wcid = status->wcid = (struct mt76_wcid *)sta->drv_priv;
 	}
 
+	mt76_airtime_check(dev, skb);
+
 	if (!wcid || !wcid->sta)
 		return;
 
@@ -886,3 +1037,16 @@ void mt76_sw_scan_complete(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 	clear_bit(MT76_SCANNING, &dev->state);
 }
 EXPORT_SYMBOL_GPL(mt76_sw_scan_complete);
+
+int mt76_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
+{
+	struct mt76_dev *dev = hw->priv;
+
+	mutex_lock(&dev->mutex);
+	*tx_ant = dev->antenna_mask;
+	*rx_ant = dev->antenna_mask;
+	mutex_unlock(&dev->mutex);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(mt76_get_antenna);