[SK_BUFF]: Introduce skb_network_offset()

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

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

7 files changed, 7 insertions, 7 deletions

diff --git a/drivers/net/atl1/atl1_main.c b/drivers/net/atl1/atl1_main.c
index e3f181602e4f..793a61b2140f 100644
--- a/drivers/net/atl1/atl1_main.c
+++ b/drivers/net/atl1/atl1_main.c
@@ -1300,7 +1300,7 @@ static int atl1_tso(struct atl1_adapter *adapter, struct sk_buff *skb,
                             ~csum_tcpudp_magic(skb->nh.iph->saddr,
                                                skb->nh.iph->daddr, 0,
                                                IPPROTO_TCP, 0);
-                        ipofst = skb->nh.raw - skb->data;
+                        ipofst = skb_network_offset(skb);
                         if (ipofst != ENET_HEADER_SIZE) /* 802.3 frame */
                                 tso->tsopl |= 1 << TSO_PARAM_ETHTYPE_SHIFT;
 
diff --git a/drivers/net/chelsio/sge.c b/drivers/net/chelsio/sge.c
index 47fa8dcf7527..8cdee67d582f 100644
--- a/drivers/net/chelsio/sge.c
+++ b/drivers/net/chelsio/sge.c
@@ -1865,7 +1865,7 @@ int t1_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
                 ++st->tx_tso;
 
-                eth_type = skb->nh.raw - skb->data == ETH_HLEN ?
+                eth_type = skb_network_offset(skb) == ETH_HLEN ?
                         CPL_ETH_II : CPL_ETH_II_VLAN;
 
                 hdr = (struct cpl_tx_pkt_lso *)skb_push(skb, sizeof(*hdr));
diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c
index 4dd712088bcf..7e9e9db4fb97 100644
--- a/drivers/net/cxgb3/sge.c
+++ b/drivers/net/cxgb3/sge.c
@@ -897,7 +897,7 @@ static void write_tx_pkt_wr(struct adapter *adap, struct sk_buff *skb,
                 d->flit[2] = 0;
                 cntrl |= V_TXPKT_OPCODE(CPL_TX_PKT_LSO);
                 hdr->cntrl = htonl(cntrl);
-                eth_type = skb->nh.raw - skb->data == ETH_HLEN ?
+                eth_type = skb_network_offset(skb) == ETH_HLEN ?
                     CPL_ETH_II : CPL_ETH_II_VLAN;
                 tso_info |= V_LSO_ETH_TYPE(eth_type) |
                     V_LSO_IPHDR_WORDS(skb->nh.iph->ihl) |
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index b28a915bd980..86161011b539 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -2910,7 +2910,7 @@ e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
                                                  0);
                         ipcse = 0;
                 }
-                ipcss = skb->nh.raw - skb->data;
+                ipcss = skb_network_offset(skb);
                 ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
                 tucss = skb->h.raw - skb->data;
                 tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 1d019195a391..c7a70933c759 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -952,7 +952,7 @@ static inline void gfar_tx_checksum(struct sk_buff *skb, struct txfcb *fcb)
          * frame (skb->data) and the start of the IP hdr.
          * l4os is the distance between the start of the
          * l3 hdr and the l4 hdr */
-        fcb->l3os = (u16)(skb->nh.raw - skb->data - GMAC_FCB_LEN);
+        fcb->l3os = (u16)(skb_network_offset(skb) - GMAC_FCB_LEN);
         fcb->l4os = (u16)(skb->h.raw - skb->nh.raw);
 
         fcb->flags = flags;
diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c
index afc2ec72529e..cfb791bb45e2 100644
--- a/drivers/net/ixgb/ixgb_main.c
+++ b/drivers/net/ixgb/ixgb_main.c
@@ -1195,7 +1195,7 @@ ixgb_tso(struct ixgb_adapter *adapter, struct sk_buff *skb)
                 skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr,
                                                       skb->nh.iph->daddr,
                                                       0, IPPROTO_TCP, 0);
-                ipcss = skb->nh.raw - skb->data;
+                ipcss = skb_network_offset(skb);
                 ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
                 ipcse = skb->h.raw - skb->data - 1;
                 tucss = skb->h.raw - skb->data;
diff --git a/drivers/net/netxen/netxen_nic_hw.c b/drivers/net/netxen/netxen_nic_hw.c
index 6537574a9cda..625e11ed6aae 100644
--- a/drivers/net/netxen/netxen_nic_hw.c
+++ b/drivers/net/netxen/netxen_nic_hw.c
@@ -386,7 +386,7 @@ void netxen_tso_check(struct netxen_adapter *adapter,
         }
         adapter->stats.xmitcsummed++;
         desc->tcp_hdr_offset = skb->h.raw - skb->data;
-        desc->ip_hdr_offset = skb->nh.raw - skb->data;
+        desc->ip_hdr_offset = skb_network_offset(skb);
 }
 
 int netxen_is_flash_supported(struct netxen_adapter *adapter)