igb: remove use of skb_dma_map from driver

This change removes skb_dma_map/unmap calls from the igb driver due to the
fact that the call is incompatible with iommu enabled kernels.  In order to
prevent warnings about using the wrong unmap call I have added a
mapped_as_page value to the buffer_info structure to track if the mapped
region is a page or a buffer.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/net/igb/igb.h b/drivers/net/igb/igb.h
index c458d9b188b..b1c1eb88893 100644
--- a/drivers/net/igb/igb.h
+++ b/drivers/net/igb/igb.h
@@ -137,12 +137,13 @@ struct igb_buffer {
                         unsigned long time_stamp;
                         u16 length;
                         u16 next_to_watch;
+                        u16 mapped_as_page;
                 };
                 /* RX */
                 struct {
                         struct page *page;
-                        u64 page_dma;
-                        unsigned int page_offset;
+                        dma_addr_t page_dma;
+                        u16 page_offset;
                 };
         };
 };