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>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/net/ethernet/tehuti/tehuti.c b/drivers/net/ethernet/tehuti/tehuti.c
index c77e3bf4750..3a90af6d111 100644
--- a/drivers/net/ethernet/tehuti/tehuti.c
+++ b/drivers/net/ethernet/tehuti/tehuti.c
@@ -1493,12 +1493,12 @@ bdx_tx_map_skb(struct bdx_priv *priv, struct sk_buff *skb,
         bdx_tx_db_inc_wptr(db);
 
         for (i = 0; i < nr_frags; i++) {
-                struct skb_frag_struct *frag;
+                const struct skb_frag_struct *frag;
 
                 frag = &skb_shinfo(skb)->frags[i];
-                db->wptr->len = frag->size;
+                db->wptr->len = skb_frag_size(frag);
                 db->wptr->addr.dma = skb_frag_dma_map(&priv->pdev->dev, frag,
-                                                      0, frag->size,
+                                                      0, skb_frag_size(frag),
                                                       DMA_TO_DEVICE);
 
                 pbl++;