[SK_BUFF]: Convert skb->end to sk_buff_data_t

Now to convert the last one, skb->data, that will allow many simplifications
and removal of some of the offset helpers.

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

9 files changed, 44 insertions, 27 deletions

diff --git a/drivers/atm/ambassador.c b/drivers/atm/ambassador.c
index 3c372e08f77d..59651abfa4f8 100644
--- a/drivers/atm/ambassador.c
+++ b/drivers/atm/ambassador.c
@@ -821,7 +821,7 @@ static inline void fill_rx_pool (amb_dev * dev, unsigned char pool,
     }
     // cast needed as there is no %? for pointer differences
     PRINTD (DBG_SKB, "allocated skb at %p, head %p, area %li",
-            skb, skb->head, (long) (skb->end - skb->head));
+            skb, skb->head, (long) (skb_end_pointer(skb) - skb->head));
     rx.handle = virt_to_bus (skb);
     rx.host_address = cpu_to_be32 (virt_to_bus (skb->data));
     if (rx_give (dev, &rx, pool))
diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c
index 1e49799cd6cf..20f2a3a82656 100644
--- a/drivers/atm/idt77252.c
+++ b/drivers/atm/idt77252.c
@@ -1065,7 +1065,8 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
         vcc = vc->rx_vcc;
 
         pci_dma_sync_single_for_cpu(card->pcidev, IDT77252_PRV_PADDR(skb),
-                                    skb->end - skb->data, PCI_DMA_FROMDEVICE);
+                                    skb_end_pointer(skb) - skb->data,
+                                    PCI_DMA_FROMDEVICE);
 
         if ((vcc->qos.aal == ATM_AAL0) ||
             (vcc->qos.aal == ATM_AAL34)) {
@@ -1194,7 +1195,8 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
                 }
 
                 pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb),
-                                 skb->end - skb->data, PCI_DMA_FROMDEVICE);
+                                 skb_end_pointer(skb) - skb->data,
+                                 PCI_DMA_FROMDEVICE);
                 sb_pool_remove(card, skb);
 
                 skb_trim(skb, len);
@@ -1267,7 +1269,7 @@ idt77252_rx_raw(struct idt77252_dev *card)
         tail = readl(SAR_REG_RAWCT);
 
         pci_dma_sync_single_for_cpu(card->pcidev, IDT77252_PRV_PADDR(queue),
-                                    queue->end - queue->head - 16,
+                                    skb_end_pointer(queue) - queue->head - 16,
                                     PCI_DMA_FROMDEVICE);
 
         while (head != tail) {
@@ -1363,7 +1365,8 @@ drop:
                                 queue = card->raw_cell_head;
                                 pci_dma_sync_single_for_cpu(card->pcidev,
                                                             IDT77252_PRV_PADDR(queue),
-                                                            queue->end - queue->data,
+                                                            (skb_end_pointer(queue) -
+                                                             queue->data),
                                                             PCI_DMA_FROMDEVICE);
                         } else {
                                 card->raw_cell_head = NULL;
@@ -1875,7 +1878,7 @@ add_rx_skb(struct idt77252_dev *card, int queue,
                 }
 
                 paddr = pci_map_single(card->pcidev, skb->data,
-                                       skb->end - skb->data,
+                                       skb_end_pointer(skb) - skb->data,
                                        PCI_DMA_FROMDEVICE);
                 IDT77252_PRV_PADDR(skb) = paddr;
 
@@ -1889,7 +1892,7 @@ add_rx_skb(struct idt77252_dev *card, int queue,
 
 outunmap:
         pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb),
-                         skb->end - skb->data, PCI_DMA_FROMDEVICE);
+                         skb_end_pointer(skb) - skb->data, PCI_DMA_FROMDEVICE);
 
         handle = IDT77252_PRV_POOL(skb);
         card->sbpool[POOL_QUEUE(handle)].skb[POOL_INDEX(handle)] = NULL;
@@ -1906,12 +1909,14 @@ recycle_rx_skb(struct idt77252_dev *card, struct sk_buff *skb)
         int err;
 
         pci_dma_sync_single_for_device(card->pcidev, IDT77252_PRV_PADDR(skb),
-                                       skb->end - skb->data, PCI_DMA_FROMDEVICE);
+                                       skb_end_pointer(skb) - skb->data,
+                                       PCI_DMA_FROMDEVICE);
 
         err = push_rx_skb(card, skb, POOL_QUEUE(handle));
         if (err) {
                 pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb),
-                                 skb->end - skb->data, PCI_DMA_FROMDEVICE);
+                                 skb_end_pointer(skb) - skb->data,
+                                 PCI_DMA_FROMDEVICE);
                 sb_pool_remove(card, skb);
                 dev_kfree_skb(skb);
         }
@@ -3123,7 +3128,8 @@ deinit_card(struct idt77252_dev *card)
                         if (skb) {
                                 pci_unmap_single(card->pcidev,
                                                  IDT77252_PRV_PADDR(skb),
-                                                 skb->end - skb->data,
+                                                 (skb_end_pointer(skb) -
+                                                  skb->data),
                                                  PCI_DMA_FROMDEVICE);
                                 card->sbpool[i].skb[j] = NULL;
                                 dev_kfree_skb(skb);
diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c
index 66ad4d40ba1d..e842c65a3f4d 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_cm.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c
@@ -477,7 +477,7 @@ static void send_mpa_req(struct iwch_ep *ep, struct sk_buff *skb)
         BUG_ON(skb_cloned(skb));
 
         mpalen = sizeof(*mpa) + ep->plen;
-        if (skb->data + mpalen + sizeof(*req) > skb->end) {
+        if (skb->data + mpalen + sizeof(*req) > skb_end_pointer(skb)) {
                 kfree_skb(skb);
                 skb=alloc_skb(mpalen + sizeof(*req), GFP_KERNEL);
                 if (!skb) {
diff --git a/drivers/net/cris/eth_v10.c b/drivers/net/cris/eth_v10.c
index 7feb9c561147..5bdf5ca85a65 100644
--- a/drivers/net/cris/eth_v10.c
+++ b/drivers/net/cris/eth_v10.c
@@ -1348,7 +1348,8 @@ e100_rx(struct net_device *dev)
 
 #ifdef ETHDEBUG
                 printk("head = 0x%x, data = 0x%x, tail = 0x%x, end = 0x%x\n",
-                  skb->head, skb->data, skb_tail_pointer(skb), skb->end);
+                       skb->head, skb->data, skb_tail_pointer(skb),
+                       skb_end_pointer(skb));
                 printk("copying packet to 0x%x.\n", skb_data_ptr);
 #endif
 
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index d5d458c3421f..d3f4bcaa9692 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -1386,9 +1386,13 @@ static int nv_alloc_rx(struct net_device *dev)
                 struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
                 if (skb) {
                         np->put_rx_ctx->skb = skb;
-                        np->put_rx_ctx->dma = pci_map_single(np->pci_dev, skb->data,
-                                                             skb->end-skb->data, PCI_DMA_FROMDEVICE);
-                        np->put_rx_ctx->dma_len = skb->end-skb->data;
+                        np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
+                                                             skb->data,
+                                                        (skb_end_pointer(skb) -
+                                                         skb->data),
+                                                             PCI_DMA_FROMDEVICE);
+                        np->put_rx_ctx->dma_len = (skb_end_pointer(skb) -
+                                                   skb->data);
                         np->put_rx.orig->buf = cpu_to_le32(np->put_rx_ctx->dma);
                         wmb();
                         np->put_rx.orig->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
@@ -1416,9 +1420,13 @@ static int nv_alloc_rx_optimized(struct net_device *dev)
                 struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
                 if (skb) {
                         np->put_rx_ctx->skb = skb;
-                        np->put_rx_ctx->dma = pci_map_single(np->pci_dev, skb->data,
-                                                             skb->end-skb->data, PCI_DMA_FROMDEVICE);
-                        np->put_rx_ctx->dma_len = skb->end-skb->data;
+                        np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
+                                                             skb->data,
+                                                             (skb_end_pointer(skb) -
+                                                              skb->data),
+                                                             PCI_DMA_FROMDEVICE);
+                        np->put_rx_ctx->dma_len = (skb_end_pointer(skb) -
+                                                   skb->data);
                         np->put_rx.ex->bufhigh = cpu_to_le64(np->put_rx_ctx->dma) >> 32;
                         np->put_rx.ex->buflow = cpu_to_le64(np->put_rx_ctx->dma) & 0x0FFFFFFFF;
                         wmb();
@@ -1602,8 +1610,9 @@ static void nv_drain_rx(struct net_device *dev)
                 wmb();
                 if (np->rx_skb[i].skb) {
                         pci_unmap_single(np->pci_dev, np->rx_skb[i].dma,
-                                                np->rx_skb[i].skb->end-np->rx_skb[i].skb->data,
-                                                PCI_DMA_FROMDEVICE);
+                                         (skb_end_pointer(np->rx_skb[i].skb) -
+                                          np->rx_skb[i].skb->data),
+                                         PCI_DMA_FROMDEVICE);
                         dev_kfree_skb(np->rx_skb[i].skb);
                         np->rx_skb[i].skb = NULL;
                 }
@@ -4378,7 +4387,8 @@ static int nv_loopback_test(struct net_device *dev)
         for (i = 0; i < pkt_len; i++)
                 pkt_data[i] = (u8)(i & 0xff);
         test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
-                                       tx_skb->end-tx_skb->data, PCI_DMA_FROMDEVICE);
+                                       (skb_end_pointer(tx_skb) -
+                                        tx_skb->data), PCI_DMA_FROMDEVICE);
 
         if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
                 np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
@@ -4435,7 +4445,7 @@ static int nv_loopback_test(struct net_device *dev)
         }
 
         pci_unmap_page(np->pci_dev, test_dma_addr,
-                       tx_skb->end-tx_skb->data,
+                       (skb_end_pointer(tx_skb) - tx_skb->data),
                        PCI_DMA_TODEVICE);
         dev_kfree_skb_any(tx_skb);
  out:
diff --git a/drivers/net/macb.c b/drivers/net/macb.c
index 98bf51afcee7..9e233f8216a7 100644
--- a/drivers/net/macb.c
+++ b/drivers/net/macb.c
@@ -576,7 +576,7 @@ static int macb_start_xmit(struct sk_buff *skb, struct net_device *dev)
         dev_dbg(&bp->pdev->dev,
                 "start_xmit: len %u head %p data %p tail %p end %p\n",
                 skb->len, skb->head, skb->data,
-                skb_tail_pointer(skb), skb->end);
+                skb_tail_pointer(skb), skb_end_pointer(skb));
         dev_dbg(&bp->pdev->dev,
                 "data:");
         for (i = 0; i < 16; i++)
diff --git a/drivers/net/wan/lmc/lmc_main.c b/drivers/net/wan/lmc/lmc_main.c
index b731f3aae0df..5bb18c0955bc 100644
--- a/drivers/net/wan/lmc/lmc_main.c
+++ b/drivers/net/wan/lmc/lmc_main.c
@@ -1932,7 +1932,7 @@ static void lmc_softreset (lmc_softc_t * const sc) /*fold00*/
         sc->lmc_rxring[i].status = 0x80000000;
 
         /* used to be PKT_BUF_SZ now uses skb since we lose some to head room */
-        sc->lmc_rxring[i].length = skb->end - skb->data;
+        sc->lmc_rxring[i].length = skb_end_pointer(skb) - skb->data;
 
         /* use to be tail which is dumb since you're thinking why write
          * to the end of the packj,et but since there's nothing there tail == data
diff --git a/drivers/net/wireless/hostap/hostap_80211_rx.c b/drivers/net/wireless/hostap/hostap_80211_rx.c
index 5e3e9e262706..35a3a50724fe 100644
--- a/drivers/net/wireless/hostap/hostap_80211_rx.c
+++ b/drivers/net/wireless/hostap/hostap_80211_rx.c
@@ -922,7 +922,7 @@ void hostap_80211_rx(struct net_device *dev, struct sk_buff *skb,
                 if (frag != 0)
                         flen -= hdrlen;
 
-                if (skb_tail_pointer(frag_skb) + flen > frag_skb->end) {
+                if (frag_skb->tail + flen > frag_skb->end) {
                         printk(KERN_WARNING "%s: host decrypted and "
                                "reassembled frame did not fit skb\n",
                                dev->name);
diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c
index 4d8f282b23d1..a076f735a7bc 100644
--- a/drivers/usb/atm/usbatm.c
+++ b/drivers/usb/atm/usbatm.c
@@ -335,12 +335,12 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
 
         sarb = instance->cached_vcc->sarb;
 
-        if (skb_tail_pointer(sarb) + ATM_CELL_PAYLOAD > sarb->end) {
+        if (sarb->tail + ATM_CELL_PAYLOAD > sarb->end) {
                 atm_rldbg(instance, "%s: buffer overrun (sarb->len %u, vcc: 0x%p)!\n",
                                 __func__, sarb->len, vcc);
                 /* discard cells already received */
                 skb_trim(sarb, 0);
-                UDSL_ASSERT(skb_tail_pointer(sarb) + ATM_CELL_PAYLOAD <= sarb->end);
+                UDSL_ASSERT(sarb->tail + ATM_CELL_PAYLOAD <= sarb->end);
         }
 
         memcpy(skb_tail_pointer(sarb), source + ATM_CELL_HEADER, ATM_CELL_PAYLOAD);