2023-12-11 14:43:36

by Lorenzo Bianconi

[permalink] [raw]
Subject: [PATCH] wifi: mt76: set page_pool napi pointer for mmio devices

In order to recycle skbs in the page_pool "hot" cache in
napi_pp_put_page routine, set napi pointer for MMIO devices in
mt76_create_page_pool().

Signed-off-by: Lorenzo Bianconi <[email protected]>
---
drivers/net/wireless/mediatek/mt76/mac80211.c | 4 +++-
drivers/net/wireless/mediatek/mt76/mt76.h | 13 +++++++++++++
2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index 5cc608d20619..ec89982b4fda 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -579,13 +579,13 @@ EXPORT_SYMBOL_GPL(mt76_unregister_phy);

int mt76_create_page_pool(struct mt76_dev *dev, struct mt76_queue *q)
{
+ int idx = mt76_get_rx_queue_index(dev, q);
struct page_pool_params pp_params = {
.order = 0,
.flags = 0,
.nid = NUMA_NO_NODE,
.dev = dev->dma_dev,
};
- int idx = q - dev->q_rx;

switch (idx) {
case MT_RXQ_MAIN:
@@ -604,6 +604,8 @@ int mt76_create_page_pool(struct mt76_dev *dev, struct mt76_queue *q)
pp_params.dma_dir = DMA_FROM_DEVICE;
pp_params.max_len = PAGE_SIZE;
pp_params.offset = 0;
+ if (idx >= 0 && idx < ARRAY_SIZE(dev->napi))
+ pp_params.napi = &dev->napi[idx];
}

q->page_pool = page_pool_create(&pp_params);
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index c7286dbeeaae..99712ce33e9c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -1613,6 +1613,19 @@ s8 mt76_get_rate_power_limits(struct mt76_phy *phy,
struct mt76_power_limits *dest,
s8 target_power);

+static inline int mt76_get_rx_queue_index(struct mt76_dev *dev,
+ struct mt76_queue *q)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(dev->q_rx); i++) {
+ if (q == &dev->q_rx[i])
+ return i;
+ }
+
+ return -EINVAL;
+}
+
static inline bool mt76_queue_is_wed_tx_free(struct mt76_queue *q)
{
return (q->flags & MT_QFLAG_WED) &&
--
2.43.0