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/marvell/skge.c b/drivers/net/ethernet/marvell/skge.c
index 2977303..c7b6083 100644
--- a/drivers/net/ethernet/marvell/skge.c
+++ b/drivers/net/ethernet/marvell/skge.c
@@ -2770,10 +2770,10 @@
control |= BMU_STFWD;
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+ const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
map = skb_frag_dma_map(&hw->pdev->dev, frag, 0,
- frag->size, DMA_TO_DEVICE);
+ skb_frag_size(frag), DMA_TO_DEVICE);
e = e->next;
e->skb = skb;
@@ -2783,9 +2783,9 @@
tf->dma_lo = map;
tf->dma_hi = (u64) map >> 32;
dma_unmap_addr_set(e, mapaddr, map);
- dma_unmap_len_set(e, maplen, frag->size);
+ dma_unmap_len_set(e, maplen, skb_frag_size(frag));
- tf->control = BMU_OWN | BMU_SW | control | frag->size;
+ tf->control = BMU_OWN | BMU_SW | control | skb_frag_size(frag);
}
tf->control |= BMU_EOF | BMU_IRQ_EOF;
}