[PATCH 1/3] mt76: add size check for additional rx fragments

[PATCH 1/3] mt76: add size check for additional rx fragments

[Felix Fietkau]

So far the code only validates the buffer size of the first skb.
Extend this check to cover additional fragments as well, in case the size
is corrupted during a DMA reset.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 drivers/net/wireless/mediatek/mt76/dma.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c
index e2ba26378575..710a77fccf63 100644
--- a/drivers/net/wireless/mediatek/mt76/dma.c
+++ b/drivers/net/wireless/mediatek/mt76/dma.c
@@ -430,6 +430,14 @@ mt76_dma_rx_process(struct mt76_dev *dev, struct mt76_queue *q, int budget)
 		if (!data)
 			break;
 
+		if (q->buf_size < len + q->buf_offset) {
+			dev_kfree_skb(q->rx_head);
+			q->rx_head = NULL;
+
+			skb_free_frag(data);
+			continue;
+		}
+
 		if (q->rx_head) {
 			mt76_add_fragment(dev, q, data, len, more);
 			continue;
-- 
2.17.0

[PATCH 2/3] mt76: throttle transmission of buffered multicast packets

[Felix Fietkau]

Avoids drowning out regular transmissions

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c b/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c
index 66315410aebe..6974acc75e2b 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c
@@ -121,9 +121,10 @@ static void mt76x02_pre_tbtt_tasklet(unsigned long arg)
 		ieee80211_iterate_active_interfaces_atomic(mt76_hw(dev),
 			IEEE80211_IFACE_ITER_RESUME_ALL,
 			mt76x02_add_buffered_bc, &data);
-	} while (nframes != skb_queue_len(&data.q));
+	} while (nframes != skb_queue_len(&data.q) &&
+		 skb_queue_len(&data.q) < 8);
 
-	if (!nframes)
+	if (!skb_queue_len(&data.q))
 		return;
 
 	for (i = 0; i < ARRAY_SIZE(data.tail); i++) {
-- 
2.17.0

[PATCH 3/3] mt76: request tx status for powersave released EOSP packet

[Felix Fietkau]

Allows mac80211 to keep track of the service period

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 drivers/net/wireless/mediatek/mt76/tx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/tx.c b/drivers/net/wireless/mediatek/mt76/tx.c
index f4093dc0e174..06178bdafbac 100644
--- a/drivers/net/wireless/mediatek/mt76/tx.c
+++ b/drivers/net/wireless/mediatek/mt76/tx.c
@@ -330,7 +330,8 @@ mt76_queue_ps_skb(struct mt76_dev *dev, struct ieee80211_sta *sta,
 
 	info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE;
 	if (last)
-		info->flags |= IEEE80211_TX_STATUS_EOSP;
+		info->flags |= IEEE80211_TX_STATUS_EOSP |
+			       IEEE80211_TX_CTL_REQ_TX_STATUS;
 
 	mt76_skb_set_moredata(skb, !last);
 	dev->queue_ops->tx_queue_skb(dev, hwq, skb, wcid, sta);
-- 
2.17.0