net: add skb frag size accessors
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>
diff --git a/drivers/net/ethernet/pasemi/pasemi_mac.c b/drivers/net/ethernet/pasemi/pasemi_mac.c
index c6f0056..49b549f 100644
--- a/drivers/net/ethernet/pasemi/pasemi_mac.c
+++ b/drivers/net/ethernet/pasemi/pasemi_mac.c
@@ -300,9 +300,9 @@
pci_unmap_single(pdev, dmas[0], skb_headlen(skb), PCI_DMA_TODEVICE);
for (f = 0; f < nfrags; f++) {
- skb_frag_t *frag = &skb_shinfo(skb)->frags[f];
+ const skb_frag_t *frag = &skb_shinfo(skb)->frags[f];
- pci_unmap_page(pdev, dmas[f+1], frag->size, PCI_DMA_TODEVICE);
+ pci_unmap_page(pdev, dmas[f+1], skb_frag_size(frag), PCI_DMA_TODEVICE);
}
dev_kfree_skb_irq(skb);
@@ -1506,8 +1506,8 @@
skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
map[i + 1] = skb_frag_dma_map(&mac->dma_pdev->dev, frag, 0,
- frag->size, DMA_TO_DEVICE);
- map_size[i+1] = frag->size;
+ skb_frag_size(frag), DMA_TO_DEVICE);
+ map_size[i+1] = skb_frag_size(frag);
if (dma_mapping_error(&mac->dma_pdev->dev, map[i + 1])) {
nfrags = i;
goto out_err_nolock;