From 74bbb17491a89e8569dc90a1769679ab02b869bf Mon Sep 17 00:00:00 2001 From: Lorenzo Bianconi Date: Tue, 28 Dec 2021 15:33:57 +0100 Subject: mt76: mt7615e: process txfree and txstatus without allocating skbs 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 Signed-off-by: Felix Fietkau --- drivers/net/wireless/mediatek/mt76/mt7615/mac.c | 38 +++++++++++++++++++--- drivers/net/wireless/mediatek/mt76/mt7615/mmio.c | 1 + drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h | 1 + 3 files changed, 35 insertions(+), 5 deletions(-) (limited to 'drivers/net/wireless/mediatek') diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c index 8f8a7bc0169b..2d81cbf2600c 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c @@ -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); diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7615/mmio.c index 33f72f3657d0..ce45c3bfc443 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/mmio.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mmio.c @@ -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, diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h index 3b66aa749a21..600fa2be4da0 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h @@ -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); -- cgit v1.2.3