drivers: net: use skb_headlen()

replaces (skb->len - skb->data_len) occurrences by skb_headlen(skb)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/net/3c59x.c b/drivers/net/3c59x.c
index 5f92fdbe66e2..97525307ed27 100644
--- a/drivers/net/3c59x.c
+++ b/drivers/net/3c59x.c
@@ -2129,8 +2129,8 @@ boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev)
                 int i;
 
                 vp->tx_ring[entry].frag[0].addr = cpu_to_le32(pci_map_single(VORTEX_PCI(vp), skb->data,
-                                                                                skb->len-skb->data_len, PCI_DMA_TODEVICE));
-                vp->tx_ring[entry].frag[0].length = cpu_to_le32(skb->len-skb->data_len);
+                                                                                skb_headlen(skb), PCI_DMA_TODEVICE));
+                vp->tx_ring[entry].frag[0].length = cpu_to_le32(skb_headlen(skb));
 
                 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
                         skb_frag_t *frag = &skb_shinfo(skb)->frags[i];