[SK_BUFF]: Introduce skb_transport_offset()

For the quite common 'skb->h.raw - skb->data' sequence.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c
index bba4dcaf92e9..ceea6e45792d 100644
--- a/drivers/net/ixgb/ixgb_main.c
+++ b/drivers/net/ixgb/ixgb_main.c
@@ -1190,7 +1190,7 @@ ixgb_tso(struct ixgb_adapter *adapter, struct sk_buff *skb)
                                 return err;
                 }
 
-                hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
+                hdr_len = (skb_transport_offset(skb) + (skb->h.th->doff << 2));
                 mss = skb_shinfo(skb)->gso_size;
                 iph = ip_hdr(skb);
                 iph->tot_len = 0;
@@ -1199,8 +1199,8 @@ ixgb_tso(struct ixgb_adapter *adapter, struct sk_buff *skb)
                                                       0, IPPROTO_TCP, 0);
                 ipcss = skb_network_offset(skb);
                 ipcso = (void *)&(iph->check) - (void *)skb->data;
-                ipcse = skb->h.raw - skb->data - 1;
-                tucss = skb->h.raw - skb->data;
+                ipcse = skb_transport_offset(skb) - 1;
+                tucss = skb_transport_offset(skb);
                 tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
                 tucse = 0;
 
@@ -1245,7 +1245,7 @@ ixgb_tx_csum(struct ixgb_adapter *adapter, struct sk_buff *skb)
 
         if(likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
                 struct ixgb_buffer *buffer_info;
-                css = skb->h.raw - skb->data;
+                css = skb_transport_offset(skb);
                 cso = css + skb->csum_offset;
 
                 i = adapter->tx_ring.next_to_use;