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/adaptec/starfire.c b/drivers/net/ethernet/adaptec/starfire.c
index d6b0155..6d9f691 100644
--- a/drivers/net/ethernet/adaptec/starfire.c
+++ b/drivers/net/ethernet/adaptec/starfire.c
@@ -1256,12 +1256,12 @@
np->tx_info[entry].mapping =
pci_map_single(np->pci_dev, skb->data, skb_first_frag_len(skb), PCI_DMA_TODEVICE);
} else {
- skb_frag_t *this_frag = &skb_shinfo(skb)->frags[i - 1];
- status |= this_frag->size;
+ const skb_frag_t *this_frag = &skb_shinfo(skb)->frags[i - 1];
+ status |= skb_frag_size(this_frag);
np->tx_info[entry].mapping =
pci_map_single(np->pci_dev,
skb_frag_address(this_frag),
- this_frag->size,
+ skb_frag_size(this_frag),
PCI_DMA_TODEVICE);
}
@@ -1378,7 +1378,7 @@
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
pci_unmap_single(np->pci_dev,
np->tx_info[entry].mapping,
- skb_shinfo(skb)->frags[i].size,
+ skb_frag_size(&skb_shinfo(skb)->frags[i]),
PCI_DMA_TODEVICE);
np->dirty_tx++;
entry++;