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/jme.c b/drivers/net/ethernet/jme.c
index 48a0a23..7a0c746f 100644
--- a/drivers/net/ethernet/jme.c
+++ b/drivers/net/ethernet/jme.c
@@ -1920,7 +1920,7 @@
u8 hidma = jme->dev->features & NETIF_F_HIGHDMA;
int i, nr_frags = skb_shinfo(skb)->nr_frags;
int mask = jme->tx_ring_mask;
- struct skb_frag_struct *frag;
+ const struct skb_frag_struct *frag;
u32 len;
for (i = 0 ; i < nr_frags ; ++i) {
@@ -1930,7 +1930,7 @@
jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi,
skb_frag_page(frag),
- frag->page_offset, frag->size, hidma);
+ frag->page_offset, skb_frag_size(frag), hidma);
}
len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;