igb: place a pointer to the netdev struct in the ring itself

This change adds a pointer to the netdev to the ring itself.  The idea being
at some point in the future it will be possible to support multiple netdevs
from a single adapter struct.

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, 2 insertions, 1 deletions

diff --git a/drivers/net/igb/igb.h b/drivers/net/igb/igb.h
index 0c30c5e375c7..2416c12af3fe 100644
--- a/drivers/net/igb/igb.h
+++ b/drivers/net/igb/igb.h
@@ -175,9 +175,10 @@ struct igb_q_vector {
 
 struct igb_ring {
         struct igb_q_vector *q_vector; /* backlink to q_vector */
-        void *desc;                    /* descriptor ring memory */
+        struct net_device *netdev;     /* back pointer to net_device */
         struct pci_dev *pdev;          /* pci device for dma mapping */
         dma_addr_t dma;                /* phys address of the ring */
+        void *desc;                    /* descriptor ring memory */
         unsigned int size;             /* length of desc. ring in bytes */
         unsigned int count;            /* number of desc. in the ring */
         u16 next_to_use;