1 files changed, 8 insertions, 5 deletions

diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index c749bdba214c..c6948d8f53f6 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -239,11 +239,14 @@ static void xennet_alloc_rx_buffers(struct net_device *dev)
          */
         batch_target = np->rx_target - (req_prod - np->rx.rsp_cons);
         for (i = skb_queue_len(&np->rx_batch); i < batch_target; i++) {
-                skb = __netdev_alloc_skb(dev, RX_COPY_THRESHOLD,
+                skb = __netdev_alloc_skb(dev, RX_COPY_THRESHOLD + NET_IP_ALIGN,
                                          GFP_ATOMIC | __GFP_NOWARN);
                 if (unlikely(!skb))
                         goto no_skb;
 
+                /* Align ip header to a 16 bytes boundary */
+                skb_reserve(skb, NET_IP_ALIGN);
+
                 page = alloc_page(GFP_ATOMIC | __GFP_NOWARN);
                 if (!page) {
                         kfree_skb(skb);
@@ -471,7 +474,7 @@ static int xennet_start_xmit(struct sk_buff *skb, struct net_device *dev)
         unsigned int offset = offset_in_page(data);
         unsigned int len = skb_headlen(skb);
 
-        frags += (offset + len + PAGE_SIZE - 1) / PAGE_SIZE;
+        frags += DIV_ROUND_UP(offset + len, PAGE_SIZE);
         if (unlikely(frags > MAX_SKB_FRAGS + 1)) {
                 printk(KERN_ALERT "xennet: skb rides the rocket: %d frags\n",
                        frags);
@@ -1794,10 +1797,10 @@ static struct xenbus_driver netfront = {
 
 static int __init netif_init(void)
 {
-        if (!is_running_on_xen())
+        if (!xen_domain())
                 return -ENODEV;
 
-        if (is_initial_xendomain())
+        if (xen_initial_domain())
                 return 0;
 
         printk(KERN_INFO "Initialising Xen virtual ethernet driver.\n");
@@ -1809,7 +1812,7 @@ module_init(netif_init);
 
 static void __exit netif_exit(void)
 {
-        if (is_initial_xendomain())
+        if (xen_initial_domain())
                 return;
 
         xenbus_unregister_driver(&netfront);