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/virtio_net.c b/drivers/net/virtio_net.c
index b8225f3..0d4841b 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -147,14 +147,14 @@
skb_frag_t *f;
f = &skb_shinfo(skb)->frags[i];
- f->size = min((unsigned)PAGE_SIZE - offset, *len);
+ skb_frag_size_set(f, min((unsigned)PAGE_SIZE - offset, *len));
f->page_offset = offset;
__skb_frag_set_page(f, page);
- skb->data_len += f->size;
- skb->len += f->size;
+ skb->data_len += skb_frag_size(f);
+ skb->len += skb_frag_size(f);
skb_shinfo(skb)->nr_frags++;
- *len -= f->size;
+ *len -= skb_frag_size(f);
}
static struct sk_buff *page_to_skb(struct virtnet_info *vi,