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mt76: mt7615e: process txfree and txstatus without allocating skbs

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Similar to mt7915 driver, process txfree and txstatus without allocating
skbs in order to reduce pressure on the memory allocator

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi 2021-12-28 15:33:57 +01:00 committed by Felix Fietkau
parent 3fd2dbd6a1
commit 74bbb17491
3 changed files with 35 additions and 5 deletions
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38
drivers/net/wireless/mediatek/mt76/mt7615/mac.c
View File

@ -1642,9 +1642,10 @@ mt7615_mac_tx_free_token(struct mt7615_dev *dev, u16 token)
mt7615_txwi_free(dev, txwi);
}
static void mt7615_mac_tx_free(struct mt7615_dev *dev, struct sk_buff *skb)
static void mt7615_mac_tx_free(struct mt7615_dev *dev, void *data, int len)
{
struct mt7615_tx_free *free = (struct mt7615_tx_free *)skb->data;
struct mt7615_tx_free *free = (struct mt7615_tx_free *)data;
void *end = data + len;
u8 i, count;
mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_PSD], false);
@ -1659,17 +1660,21 @@ static void mt7615_mac_tx_free(struct mt7615_dev *dev, struct sk_buff *skb)
if (is_mt7615(&dev->mt76)) {
__le16 *token = &free->token[0];
if (WARN_ON_ONCE((void *)&token[count] > end))
return;
for (i = 0; i < count; i++)
mt7615_mac_tx_free_token(dev, le16_to_cpu(token[i]));
} else {
__le32 *token = (__le32 *)&free->token[0];
if (WARN_ON_ONCE((void *)&token[count] > end))
return;
for (i = 0; i < count; i++)
mt7615_mac_tx_free_token(dev, le32_to_cpu(token[i]));
}
dev_kfree_skb(skb);
rcu_read_lock();
mt7615_mac_sta_poll(dev);
rcu_read_unlock();
@ -1677,6 +1682,28 @@ static void mt7615_mac_tx_free(struct mt7615_dev *dev, struct sk_buff *skb)
mt76_worker_schedule(&dev->mt76.tx_worker);
}
bool mt7615_rx_check(struct mt76_dev *mdev, void *data, int len)
{
struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
__le32 *rxd = (__le32 *)data;
__le32 *end = (__le32 *)&rxd[len / 4];
enum rx_pkt_type type;
type = FIELD_GET(MT_RXD0_PKT_TYPE, le32_to_cpu(rxd[0]));
switch (type) {
case PKT_TYPE_TXRX_NOTIFY:
mt7615_mac_tx_free(dev, data, len);
return false;
case PKT_TYPE_TXS:
for (rxd++; rxd + 7 <= end; rxd += 7)
mt7615_mac_add_txs(dev, rxd);
return false;
default:
return true;
}
}
EXPORT_SYMBOL_GPL(mt7615_rx_check);
void mt7615_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
struct sk_buff *skb)
{
@ -1698,7 +1725,8 @@ void mt7615_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
dev_kfree_skb(skb);
break;
case PKT_TYPE_TXRX_NOTIFY:
mt7615_mac_tx_free(dev, skb);
mt7615_mac_tx_free(dev, skb->data, skb->len);
dev_kfree_skb(skb);
break;
case PKT_TYPE_RX_EVENT:
mt7615_mcu_rx_event(dev, skb);

1
drivers/net/wireless/mediatek/mt76/mt7615/mmio.c
View File

@ -194,6 +194,7 @@ int mt7615_mmio_probe(struct device *pdev, void __iomem *mem_base,
.token_size = MT7615_TOKEN_SIZE,
.tx_prepare_skb = mt7615_tx_prepare_skb,
.tx_complete_skb = mt7615_tx_complete_skb,
.rx_check = mt7615_rx_check,
.rx_skb = mt7615_queue_rx_skb,
.rx_poll_complete = mt7615_rx_poll_complete,
.sta_ps = mt7615_sta_ps,

1
drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
View File

@ -509,6 +509,7 @@ int mt7615_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
void mt7615_tx_worker(struct mt76_worker *w);
void mt7615_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e);
void mt7615_tx_token_put(struct mt7615_dev *dev);
bool mt7615_rx_check(struct mt76_dev *mdev, void *data, int len);
void mt7615_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
struct sk_buff *skb);
void mt7615_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta, bool ps);