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/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c
index 4da972e..b1cd41b 100644
--- a/drivers/net/ethernet/ibm/ibmveth.c
+++ b/drivers/net/ethernet/ibm/ibmveth.c
@@ -1014,15 +1014,15 @@
/* Map the frags */
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];
dma_addr = skb_frag_dma_map(&adapter->vdev->dev, frag, 0,
- frag->size, DMA_TO_DEVICE);
+ skb_frag_size(frag), DMA_TO_DEVICE);
if (dma_mapping_error(&adapter->vdev->dev, dma_addr))
goto map_failed_frags;
- descs[i+1].fields.flags_len = desc_flags | frag->size;
+ descs[i+1].fields.flags_len = desc_flags | skb_frag_size(frag);
descs[i+1].fields.address = dma_addr;
}