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net: add skb frag size accessors

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To ease skb->truesize sanitization, its better to be able to localize
all references to skb frags size.

Define accessors : skb_frag_size() to fetch frag size, and
skb_frag_size_{set|add|sub}() to manipulate it.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2011-10-18 21:00:24 +00:00
committed by David S. Miller
parent dd767856a3
commit 9e903e0852
87 changed files with 387 additions and 357 deletions
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12
drivers/net/ethernet/broadcom/bnx2.c
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@@ -2871,7 +2871,7 @@ bnx2_tx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget)
dma_unmap_addr(
&txr->tx_buf_ring[TX_RING_IDX(sw_cons)],
mapping),
skb_shinfo(skb)->frags[i].size,
skb_frag_size(&skb_shinfo(skb)->frags[i]),
PCI_DMA_TODEVICE);
}
@@ -3049,7 +3049,7 @@ bnx2_rx_skb(struct bnx2 *bp, struct bnx2_rx_ring_info *rxr, struct sk_buff *skb,
} else {
skb_frag_t *frag =
&skb_shinfo(skb)->frags[i - 1];
frag->size -= tail;
skb_frag_size_sub(frag, tail);
skb->data_len -= tail;
}
return 0;
@@ -5395,7 +5395,7 @@ bnx2_free_tx_skbs(struct bnx2 *bp)
tx_buf = &txr->tx_buf_ring[TX_RING_IDX(j)];
dma_unmap_page(&bp->pdev->dev,
dma_unmap_addr(tx_buf, mapping),
skb_shinfo(skb)->frags[k].size,
skb_frag_size(&skb_shinfo(skb)->frags[k]),
PCI_DMA_TODEVICE);
}
dev_kfree_skb(skb);
@@ -6530,13 +6530,13 @@ bnx2_start_xmit(struct sk_buff *skb, struct net_device *dev)
tx_buf->is_gso = skb_is_gso(skb);
for (i = 0; i < last_frag; i++) {
skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
prod = NEXT_TX_BD(prod);
ring_prod = TX_RING_IDX(prod);
txbd = &txr->tx_desc_ring[ring_prod];
len = frag->size;
len = skb_frag_size(frag);
mapping = skb_frag_dma_map(&bp->pdev->dev, frag, 0, len,
DMA_TO_DEVICE);
if (dma_mapping_error(&bp->pdev->dev, mapping))
@@ -6594,7 +6594,7 @@ dma_error:
ring_prod = TX_RING_IDX(prod);
tx_buf = &txr->tx_buf_ring[ring_prod];
dma_unmap_page(&bp->pdev->dev, dma_unmap_addr(tx_buf, mapping),
skb_shinfo(skb)->frags[i].size,
skb_frag_size(&skb_shinfo(skb)->frags[i]),
PCI_DMA_TODEVICE);
}