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core: use page fragments for rx buffers

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Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2016-01-28 14:54:01 +01:00
parent 82510f818c
commit 0f896990cd
4 changed files with 22 additions and 16 deletions
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dma.c
+9 -3
View File
@@ -175,7 +175,7 @@ mt76_dma_kick_queue(struct mt76_dev *dev, struct mt76_queue *q)
}
static int
mt76_dma_rx_fill(struct mt76_dev *dev, struct mt76_queue *q)
mt76_dma_rx_fill(struct mt76_dev *dev, struct mt76_queue *q, bool napi)
{
dma_addr_t addr;
void *buf;
@@ -183,17 +183,23 @@ mt76_dma_rx_fill(struct mt76_dev *dev, struct mt76_queue *q)
int len = SKB_WITH_OVERHEAD(q->buf_size);
int offset = q->buf_offset;
int idx;
void *(*alloc)(unsigned int fragsz);
if (napi)
alloc = napi_alloc_frag;
else
alloc = netdev_alloc_frag;
spin_lock_bh(&q->lock);
while (q->queued < q->ndesc - 1) {
buf = kzalloc(q->buf_size, GFP_ATOMIC);
buf = alloc(q->buf_size);
if (!buf)
break;
addr = dma_map_single(dev->dev, buf, len, DMA_FROM_DEVICE);
if (dma_mapping_error(dev->dev, addr)) {
kfree(buf);
skb_free_frag(buf);
break;
}
mt76.h
+1 -1
View File
@@ -96,7 +96,7 @@ struct mt76_queue_ops {
void (*done)(struct mt76_dev *dev, struct mt76_queue *q,
struct mt76_queue_entry *e));
int (*rx_fill)(struct mt76_dev *dev, struct mt76_queue *q);
int (*rx_fill)(struct mt76_dev *dev, struct mt76_queue *q, bool napi);
void (*kick)(struct mt76_dev *dev, struct mt76_queue *q);
};
mt7603_dma.c
+6 -6
View File
@@ -78,7 +78,7 @@ mt7603_rx_cleanup(struct mt7603_dev *dev, struct mt76_queue *q)
if (!buf)
break;
kfree(buf);
skb_free_frag(buf);
} while (1);
spin_unlock_bh(&q->lock);
}
@@ -145,9 +145,9 @@ mt7603_process_rx_queue(struct mt7603_dev *dev, struct mt76_queue *q, int budget
if (!data)
break;
skb = build_skb(data, 0);
skb = build_skb(data, q->buf_size);
if (!skb) {
kfree(data);
skb_free_frag(data);
continue;
}
@@ -161,7 +161,7 @@ mt7603_process_rx_queue(struct mt7603_dev *dev, struct mt76_queue *q, int budget
done++;
}
mt76_queue_rx_fill(dev, q);
mt76_queue_rx_fill(dev, q, true);
return done;
}
@@ -289,8 +289,8 @@ int mt7603_dma_init(struct mt7603_dev *dev)
if (ret)
return ret;
mt76_queue_rx_fill(dev, &dev->q_rx);
mt76_queue_rx_fill(dev, &dev->mcu.q_rx);
mt76_queue_rx_fill(dev, &dev->q_rx, false);
mt76_queue_rx_fill(dev, &dev->mcu.q_rx, false);
mt76_wr(dev, MT_DELAY_INT_CFG, 0);
mt76x2_dma.c
+6 -6
View File
@@ -106,7 +106,7 @@ mt76x2_rx_cleanup(struct mt76x2_dev *dev, struct mt76_queue *q)
if (!buf)
break;
kfree(buf);
skb_free_frag(buf);
} while (1);
spin_unlock_bh(&q->lock);
}
@@ -181,9 +181,9 @@ mt76x2_process_rx_queue(struct mt76x2_dev *dev, struct mt76_queue *q, int budget
if (!data)
break;
skb = build_skb(data, 0);
skb = build_skb(data, q->buf_size);
if (!skb) {
kfree(data);
skb_free_frag(data);
continue;
}
@@ -198,7 +198,7 @@ mt76x2_process_rx_queue(struct mt76x2_dev *dev, struct mt76_queue *q, int budget
done++;
}
mt76_queue_rx_fill(dev, q);
mt76_queue_rx_fill(dev, q, true);
return done;
}
@@ -320,8 +320,8 @@ int mt76x2_dma_init(struct mt76x2_dev *dev)
if (ret)
return ret;
mt76_queue_rx_fill(dev, &dev->q_rx);
mt76_queue_rx_fill(dev, &dev->mcu.q_rx);
mt76_queue_rx_fill(dev, &dev->q_rx, false);
mt76_queue_rx_fill(dev, &dev->mcu.q_rx, false);
return 0;
}