net: Use skb accessors in network drivers

In preparation for unifying the skb_frag and bio_vec, use the fine
accessors which already exist and use skb_frag_t instead of
struct skb_frag_struct.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/infiniband/hw/hfi1/vnic_sdma.c

@@ -102,7 +102,7 @@ static noinline int build_vnic_ulp_payload(struct sdma_engine *sde,
 		goto bail_txadd;
 
 	for (i = 0; i < skb_shinfo(tx->skb)->nr_frags; i++) {
-		struct skb_frag_struct *frag = &skb_shinfo(tx->skb)->frags[i];
+		skb_frag_t *frag = &skb_shinfo(tx->skb)->frags[i];
 
 		/* combine physically continuous fragments later? */
 		ret = sdma_txadd_page(sde->dd,