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/staging/hv/netvsc_drv.c b/drivers/staging/hv/netvsc_drv.c
index 58792ae..4c7739f 100644
--- a/drivers/staging/hv/netvsc_drv.c
+++ b/drivers/staging/hv/netvsc_drv.c
@@ -169,11 +169,11 @@
/* Additional fragments are after SKB data */
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- skb_frag_t *f = &skb_shinfo(skb)->frags[i];
+ const skb_frag_t *f = &skb_shinfo(skb)->frags[i];
packet->page_buf[i+2].pfn = page_to_pfn(skb_frag_page(f));
packet->page_buf[i+2].offset = f->page_offset;
- packet->page_buf[i+2].len = f->size;
+ packet->page_buf[i+2].len = skb_frag_size(f);
}
/* Set the completion routine */