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mt76: mt7921: add back connection monitor support

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Hw beacon cmd to the mt7921 firmware doesn't only filter out the beacon,
but also performs its own connection monitoring, including periodic
keep-alives to the AP and probing the AP on beacon loss. Will indicate
the host with the event when the firmware detects the connection is lost.

Fixes: 1d8efc741d ("mt76: mt7921: introduce Runtime PM support")
Reviewed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: YN Chen <yn.chen@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Sean Wang
2021-05-10 23:14:57 +08:00
committed by Felix Fietkau
parent edb5aebc1c
commit 10de032a31
2 changed files with 27 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/wireless/mediatek/mt76/mt7921/init.c
View File

@@ -45,6 +45,7 @@ static void
mt7921_init_wiphy(struct ieee80211_hw *hw)
{
struct mt7921_phy *phy = mt7921_hw_phy(hw);
struct mt7921_dev *dev = phy->dev;
struct wiphy *wiphy = hw->wiphy;
hw->queues = 4;
@@ -84,6 +85,9 @@ mt7921_init_wiphy(struct ieee80211_hw *hw)
ieee80211_hw_set(hw, SUPPORTS_PS);
ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
if (dev->pm.enable)
ieee80211_hw_set(hw, CONNECTION_MONITOR);
hw->max_tx_fragments = 4;
}

32
drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
View File

@@ -450,22 +450,33 @@ mt7921_mcu_scan_event(struct mt7921_dev *dev, struct sk_buff *skb)
}
static void
mt7921_mcu_beacon_loss_event(struct mt7921_dev *dev, struct sk_buff *skb)
mt7921_mcu_connection_loss_iter(void *priv, u8 *mac,
struct ieee80211_vif *vif)
{
struct mt76_vif *mvif = (struct mt76_vif *)vif->drv_priv;
struct mt76_connac_beacon_loss_event *event = priv;
if (mvif->idx != event->bss_idx)
return;
if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
return;
ieee80211_connection_loss(vif);
}
static void
mt7921_mcu_connection_loss_event(struct mt7921_dev *dev, struct sk_buff *skb)
{
struct mt76_connac_beacon_loss_event *event;
struct mt76_phy *mphy;
u8 band_idx = 0; /* DBDC support */
struct mt76_phy *mphy = &dev->mt76.phy;
skb_pull(skb, sizeof(struct mt7921_mcu_rxd));
event = (struct mt76_connac_beacon_loss_event *)skb->data;
if (band_idx && dev->mt76.phy2)
mphy = dev->mt76.phy2;
else
mphy = &dev->mt76.phy;
ieee80211_iterate_active_interfaces_atomic(mphy->hw,
IEEE80211_IFACE_ITER_RESUME_ALL,
mt76_connac_mcu_beacon_loss_iter, event);
mt7921_mcu_connection_loss_iter, event);
}
static void
@@ -530,7 +541,7 @@ mt7921_mcu_rx_unsolicited_event(struct mt7921_dev *dev, struct sk_buff *skb)
switch (rxd->eid) {
case MCU_EVENT_BSS_BEACON_LOSS:
mt7921_mcu_beacon_loss_event(dev, skb);
mt7921_mcu_connection_loss_event(dev, skb);
break;
case MCU_EVENT_SCHED_SCAN_DONE:
case MCU_EVENT_SCAN_DONE:
@@ -1379,6 +1390,7 @@ mt7921_pm_interface_iter(void *priv, u8 *mac, struct ieee80211_vif *vif)
{
struct mt7921_phy *phy = priv;
struct mt7921_dev *dev = phy->dev;
struct ieee80211_hw *hw = mt76_hw(dev);
int ret;
if (dev->pm.enable)
@@ -1391,9 +1403,11 @@ mt7921_pm_interface_iter(void *priv, u8 *mac, struct ieee80211_vif *vif)
if (dev->pm.enable) {
vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER;
ieee80211_hw_set(hw, CONNECTION_MONITOR);
mt76_set(dev, MT_WF_RFCR(0), MT_WF_RFCR_DROP_OTHER_BEACON);
} else {
vif->driver_flags &= ~IEEE80211_VIF_BEACON_FILTER;
__clear_bit(IEEE80211_HW_CONNECTION_MONITOR, hw->flags);
mt76_clear(dev, MT_WF_RFCR(0), MT_WF_RFCR_DROP_OTHER_BEACON);
}
}