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/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index eac19e7d..106503f 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -2135,13 +2135,13 @@
frag = &skb_shinfo(skb)->frags[i];
nf = &pbuf->frag_array[i+1];
- map = skb_frag_dma_map(&pdev->dev, frag, 0, frag->size,
+ map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
DMA_TO_DEVICE);
if (dma_mapping_error(&pdev->dev, map))
goto unwind;
nf->dma = map;
- nf->length = frag->size;
+ nf->length = skb_frag_size(frag);
}
return 0;
@@ -2221,7 +2221,7 @@
if (!skb_is_gso(skb) && frag_count > QLCNIC_MAX_FRAGS_PER_TX) {
for (i = 0; i < (frag_count - QLCNIC_MAX_FRAGS_PER_TX); i++)
- delta += skb_shinfo(skb)->frags[i].size;
+ delta += skb_frag_size(&skb_shinfo(skb)->frags[i]);
if (!__pskb_pull_tail(skb, delta))
goto drop_packet;