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, 4 insertions, 4 deletions

diff --git a/drivers/net/chelsio/sge.c b/drivers/net/chelsio/sge.c
index a8ffc1e11c5f..f01cfdb995de 100644
--- a/drivers/net/chelsio/sge.c
+++ b/drivers/net/chelsio/sge.c
@@ -1123,7 +1123,7 @@ static inline unsigned int compute_large_page_tx_descs(struct sk_buff *skb)
 
         if (PAGE_SIZE > SGE_TX_DESC_MAX_PLEN) {
                 unsigned int nfrags = skb_shinfo(skb)->nr_frags;
-                unsigned int i, len = skb->len - skb->data_len;
+                unsigned int i, len = skb_headlen(skb);
                 while (len > SGE_TX_DESC_MAX_PLEN) {
                         count++;
                         len -= SGE_TX_DESC_MAX_PLEN;
@@ -1219,10 +1219,10 @@ static inline void write_tx_descs(struct adapter *adapter, struct sk_buff *skb,
         ce = &q->centries[pidx];
 
         mapping = pci_map_single(adapter->pdev, skb->data,
-                                skb->len - skb->data_len, PCI_DMA_TODEVICE);
+                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 
         desc_mapping = mapping;
-        desc_len = skb->len - skb->data_len;
+        desc_len = skb_headlen(skb);
 
         flags = F_CMD_DATAVALID | F_CMD_SOP |
             V_CMD_EOP(nfrags == 0 && desc_len <= SGE_TX_DESC_MAX_PLEN) |
@@ -1258,7 +1258,7 @@ static inline void write_tx_descs(struct adapter *adapter, struct sk_buff *skb,
 
         ce->skb = NULL;
         dma_unmap_addr_set(ce, dma_addr, mapping);
-        dma_unmap_len_set(ce, dma_len, skb->len - skb->data_len);
+        dma_unmap_len_set(ce, dma_len, skb_headlen(skb));
 
         for (i = 0; nfrags--; i++) {
                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];