xen-netfront: Avoid unaligned accesses to IP header
Align ip header to a 16 byte boundary to avoid unaligned access like other drivers. Without this patch, xen-netfront doesn't work well on ia64. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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@ -239,11 +239,14 @@ static void xennet_alloc_rx_buffers(struct net_device *dev)
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*/
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batch_target = np->rx_target - (req_prod - np->rx.rsp_cons);
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for (i = skb_queue_len(&np->rx_batch); i < batch_target; i++) {
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skb = __netdev_alloc_skb(dev, RX_COPY_THRESHOLD,
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skb = __netdev_alloc_skb(dev, RX_COPY_THRESHOLD + NET_IP_ALIGN,
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GFP_ATOMIC | __GFP_NOWARN);
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if (unlikely(!skb))
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goto no_skb;
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/* Align ip header to a 16 bytes boundary */
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skb_reserve(skb, NET_IP_ALIGN);
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page = alloc_page(GFP_ATOMIC | __GFP_NOWARN);
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if (!page) {
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kfree_skb(skb);
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