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>

15 files changed, 30 insertions, 30 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];
diff --git a/drivers/net/atl1e/atl1e_main.c b/drivers/net/atl1e/atl1e_main.c
index b6605d433e91..7dd33776de00 100644
--- a/drivers/net/atl1e/atl1e_main.c
+++ b/drivers/net/atl1e/atl1e_main.c
@@ -1679,7 +1679,7 @@ static void atl1e_tx_map(struct atl1e_adapter *adapter,
 {
         struct atl1e_tpd_desc *use_tpd = NULL;
         struct atl1e_tx_buffer *tx_buffer = NULL;
-        u16 buf_len = skb->len - skb->data_len;
+        u16 buf_len = skb_headlen(skb);
         u16 map_len = 0;
         u16 mapped_len = 0;
         u16 hdr_len = 0;
diff --git a/drivers/net/atlx/atl1.c b/drivers/net/atlx/atl1.c
index 0ebd8208f606..33448a09b47f 100644
--- a/drivers/net/atlx/atl1.c
+++ b/drivers/net/atlx/atl1.c
@@ -2347,7 +2347,7 @@ static netdev_tx_t atl1_xmit_frame(struct sk_buff *skb,
 {
         struct atl1_adapter *adapter = netdev_priv(netdev);
         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
-        int len = skb->len;
+        int len;
         int tso;
         int count = 1;
         int ret_val;
@@ -2359,7 +2359,7 @@ static netdev_tx_t atl1_xmit_frame(struct sk_buff *skb,
         unsigned int f;
         unsigned int proto_hdr_len;
 
-        len -= skb->data_len;
+        len = skb_headlen(skb);
 
         if (unlikely(skb->len <= 0)) {
                 dev_kfree_skb_any(skb);
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index 18e0a80d3e61..fa10f13242c3 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -432,7 +432,7 @@ static int make_tx_wrbs(struct be_adapter *adapter,
         map_head = txq->head;
 
         if (skb->len > skb->data_len) {
-                int len = skb->len - skb->data_len;
+                int len = skb_headlen(skb);
                 busaddr = pci_map_single(pdev, skb->data, len,
                                          PCI_DMA_TODEVICE);
                 if (pci_dma_mapping_error(pdev, busaddr))
@@ -1098,7 +1098,7 @@ static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
                 cur_index = txq->tail;
                 wrb = queue_tail_node(txq);
                 unmap_tx_frag(adapter->pdev, wrb, (unmap_skb_hdr &&
-                                        sent_skb->len > sent_skb->data_len));
+                                        skb_headlen(sent_skb)));
                 unmap_skb_hdr = false;
 
                 num_wrbs++;
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];
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 47da5fc1e9f4..974a02d81823 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -2929,7 +2929,7 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
         unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD;
         unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
         unsigned int tx_flags = 0;
-        unsigned int len = skb->len - skb->data_len;
+        unsigned int len = skb_headlen(skb);
         unsigned int nr_frags;
         unsigned int mss;
         int count = 0;
@@ -2980,7 +2980,7 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
                                         dev_kfree_skb_any(skb);
                                         return NETDEV_TX_OK;
                                 }
-                                len = skb->len - skb->data_len;
+                                len = skb_headlen(skb);
                                 break;
                         default:
                                 /* do nothing */
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 1bd581eedd06..5f70c437fa41 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -4132,7 +4132,7 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
         unsigned int max_per_txd = E1000_MAX_PER_TXD;
         unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
         unsigned int tx_flags = 0;
-        unsigned int len = skb->len - skb->data_len;
+        unsigned int len = skb_headlen(skb);
         unsigned int nr_frags;
         unsigned int mss;
         int count = 0;
@@ -4182,7 +4182,7 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
                                 dev_kfree_skb_any(skb);
                                 return NETDEV_TX_OK;
                         }
-                        len = skb->len - skb->data_len;
+                        len = skb_headlen(skb);
                 }
         }
 
diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index e2d25fbb6d28..3f445efa9482 100644
--- a/drivers/net/ehea/ehea_main.c
+++ b/drivers/net/ehea/ehea_main.c
@@ -1618,7 +1618,7 @@ static void write_swqe2_TSO(struct sk_buff *skb,
 {
         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
-        int skb_data_size = skb->len - skb->data_len;
+        int skb_data_size = skb_headlen(skb);
         int headersize;
 
         /* Packet is TCP with TSO enabled */
@@ -1629,7 +1629,7 @@ static void write_swqe2_TSO(struct sk_buff *skb,
          */
         headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
 
-        skb_data_size = skb->len - skb->data_len;
+        skb_data_size = skb_headlen(skb);
 
         if (skb_data_size >= headersize) {
                 /* copy immediate data */
@@ -1651,7 +1651,7 @@ static void write_swqe2_TSO(struct sk_buff *skb,
 static void write_swqe2_nonTSO(struct sk_buff *skb,
                                struct ehea_swqe *swqe, u32 lkey)
 {
-        int skb_data_size = skb->len - skb->data_len;
+        int skb_data_size = skb_headlen(skb);
         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
 
@@ -2108,8 +2108,8 @@ static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
         } else {
                 /* first copy data from the skb->data buffer ... */
                 skb_copy_from_linear_data(skb, imm_data,
-                                          skb->len - skb->data_len);
-                imm_data += skb->len - skb->data_len;
+                                          skb_headlen(skb));
+                imm_data += skb_headlen(skb);
 
                 /* ... then copy data from the fragments */
                 for (i = 0; i < nfrags; i++) {
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 8aa80946d835..a1c0e7bb70e8 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -2148,7 +2148,7 @@ static netdev_tx_t nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
         unsigned int i;
         u32 offset = 0;
         u32 bcnt;
-        u32 size = skb->len-skb->data_len;
+        u32 size = skb_headlen(skb);
         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
         u32 empty_slots;
         struct ring_desc* put_tx;
@@ -2269,7 +2269,7 @@ static netdev_tx_t nv_start_xmit_optimized(struct sk_buff *skb,
         unsigned int i;
         u32 offset = 0;
         u32 bcnt;
-        u32 size = skb->len-skb->data_len;
+        u32 size = skb_headlen(skb);
         u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
         u32 empty_slots;
         struct ring_desc_ex* put_tx;
diff --git a/drivers/net/ixgbevf/ixgbevf_main.c b/drivers/net/ixgbevf/ixgbevf_main.c
index 960e98532ee2..f484161418b6 100644
--- a/drivers/net/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ixgbevf/ixgbevf_main.c
@@ -604,7 +604,7 @@ static bool ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector,
                  * packets not getting split correctly
                  */
                 if (staterr & IXGBE_RXD_STAT_LB) {
-                        u32 header_fixup_len = skb->len - skb->data_len;
+                        u32 header_fixup_len = skb_headlen(skb);
                         if (header_fixup_len < 14)
                                 skb_push(skb, header_fixup_len);
                 }
diff --git a/drivers/net/ksz884x.c b/drivers/net/ksz884x.c
index 4a231bdb5671..cc0bc8a26085 100644
--- a/drivers/net/ksz884x.c
+++ b/drivers/net/ksz884x.c
@@ -4684,7 +4684,7 @@ static void send_packet(struct sk_buff *skb, struct net_device *dev)
                 int frag;
                 skb_frag_t *this_frag;
 
-                dma_buf->len = skb->len - skb->data_len;
+                dma_buf->len = skb_headlen(skb);
 
                 dma_buf->dma = pci_map_single(
                         hw_priv->pdev, skb->data, dma_buf->len,
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index 958dc283d0e7..e0b47cc8a86e 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -2757,7 +2757,7 @@ again:
         }
 
         /* map the skb for DMA */
-        len = skb->len - skb->data_len;
+        len = skb_headlen(skb);
         idx = tx->req & tx->mask;
         tx->info[idx].skb = skb;
         bus = pci_map_single(mgp->pdev, skb->data, len, PCI_DMA_TODEVICE);
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index bab0061f30f1..f155928bf14e 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -2400,7 +2400,7 @@ static struct sk_buff *s2io_txdl_getskb(struct fifo_info *fifo_data,
                 return NULL;
         }
         pci_unmap_single(nic->pdev, (dma_addr_t)txds->Buffer_Pointer,
-                         skb->len - skb->data_len, PCI_DMA_TODEVICE);
+                         skb_headlen(skb), PCI_DMA_TODEVICE);
         frg_cnt = skb_shinfo(skb)->nr_frags;
         if (frg_cnt) {
                 txds++;
@@ -4202,7 +4202,7 @@ static netdev_tx_t s2io_xmit(struct sk_buff *skb, struct net_device *dev)
                 txdp->Control_2 |= TXD_VLAN_TAG(vlan_tag);
         }
 
-        frg_len = skb->len - skb->data_len;
+        frg_len = skb_headlen(skb);
         if (offload_type == SKB_GSO_UDP) {
                 int ufo_size;
 
diff --git a/drivers/net/tehuti.c b/drivers/net/tehuti.c
index a38aede5c8d6..e29f495c6a2b 100644
--- a/drivers/net/tehuti.c
+++ b/drivers/net/tehuti.c
@@ -1508,7 +1508,7 @@ bdx_tx_map_skb(struct bdx_priv *priv, struct sk_buff *skb,
         int nr_frags = skb_shinfo(skb)->nr_frags;
         int i;
 
-        db->wptr->len = skb->len - skb->data_len;
+        db->wptr->len = skb_headlen(skb);
         db->wptr->addr.dma = pci_map_single(priv->pdev, skb->data,
                                             db->wptr->len, PCI_DMA_TODEVICE);
         pbl->len = CPU_CHIP_SWAP32(db->wptr->len);
diff --git a/drivers/net/tsi108_eth.c b/drivers/net/tsi108_eth.c
index 1292d2344a34..a03730bd1da5 100644
--- a/drivers/net/tsi108_eth.c
+++ b/drivers/net/tsi108_eth.c
@@ -704,8 +704,8 @@ static int tsi108_send_packet(struct sk_buff * skb, struct net_device *dev)
 
                 if (i == 0) {
                         data->txring[tx].buf0 = dma_map_single(NULL, skb->data,
-                                        skb->len - skb->data_len, DMA_TO_DEVICE);
-                        data->txring[tx].len = skb->len - skb->data_len;
+                                        skb_headlen(skb), DMA_TO_DEVICE);
+                        data->txring[tx].len = skb_headlen(skb);
                         misc |= TSI108_TX_SOF;
                 } else {
                         skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1];