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>
diff --git a/drivers/net/chelsio/sge.c b/drivers/net/chelsio/sge.c
index a8ffc1e..f01cfdb 100644
--- a/drivers/net/chelsio/sge.c
+++ b/drivers/net/chelsio/sge.c
@@ -1123,7 +1123,7 @@
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 @@
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 @@
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];