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wifi: mt76: mt7915: sync station power save state

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Host receives a power save state change event everytime a station enters
or leaves PS mode. Use this unsolicited event to stop filling up TX
queues in firmware, as the hardware will buffer frames for stations in
power safe indefinitely.

Limit packets to be enqueued for sleeping STAs in order to manage the
packet backlog in the host-system while still being able to indicate
pending traffic to said STAs.

Signed-off-by: David Bauer <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
David Bauer
2026-02-21 11:00:50 +00:00
committed by Felix Fietkau
parent 4aa63d4c5b
commit be3aad4c2e
3 changed files with 38 additions and 0 deletions
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mt7915/main.c
+1
View File
@@ -1832,6 +1832,7 @@ const struct ieee80211_ops mt7915_ops = {
.sw_scan_complete = mt76_sw_scan_complete,
.release_buffered_frames = mt76_release_buffered_frames,
.get_txpower = mt76_get_txpower,
.set_tim = mt76_set_tim,
.set_sar_specs = mt7915_set_sar_specs,
.channel_switch_beacon = mt7915_channel_switch_beacon,
.get_stats = mt7915_get_stats,
mt7915/mcu.c
+28
View File
@@ -402,6 +402,31 @@ mt7915_mcu_rx_bcc_notify(struct mt7915_dev *dev, struct sk_buff *skb)
mt7915_mcu_cca_finish, mphy->hw);
}
static void mt7915_mcu_rx_ps_sync(struct mt7915_dev *dev, struct sk_buff *skb)
{
struct mt7915_mcu_ps_notify *p;
struct ieee80211_sta *sta;
struct mt76_wcid *wcid;
u16 wcid_idx;
p = (struct mt7915_mcu_ps_notify *)skb->data;
wcid_idx = p->wtbl_lower | (p->wtbl_higher) << 8;
rcu_read_lock();
wcid = mt76_wcid_ptr(dev, wcid_idx);
if (!wcid)
goto out;
sta = wcid_to_sta(wcid);
if (!sta)
goto out;
ieee80211_sta_ps_transition_ni(sta, !!p->ps_bit);
out:
rcu_read_unlock();
}
static void
mt7915_mcu_rx_ext_event(struct mt7915_dev *dev, struct sk_buff *skb)
{
@@ -424,6 +449,9 @@ mt7915_mcu_rx_ext_event(struct mt7915_dev *dev, struct sk_buff *skb)
case MCU_EXT_EVENT_BCC_NOTIFY:
mt7915_mcu_rx_bcc_notify(dev, skb);
break;
case MCU_EXT_EVENT_PS_SYNC:
mt7915_mcu_rx_ps_sync(dev, skb);
break;
default:
break;
}
mt7915/mcu.h
+9
View File
@@ -54,6 +54,15 @@ struct mt7915_mcu_bcc_notify {
u8 rsv;
} __packed;
struct mt7915_mcu_ps_notify {
struct mt76_connac2_mcu_rxd_hdr rxd;
u8 wtbl_lower;
u8 ps_bit;
u8 wtbl_higher;
u8 rsv;
} __packed;
struct mt7915_mcu_rdd_report {
struct mt76_connac2_mcu_rxd_hdr rxd;