ixgbe: Modify 82599 HWRSC statistics counters

Divide 82599 HWRSC counters into aggregated and flushed to count number of
packets getting coalesced per TCP connection.

Signed-off-by:  Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index 7eb08a6..76b052fa 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -159,6 +159,7 @@
 	struct ixgbe_queue_stats stats;
 	unsigned long reinit_state;
 	u64 rsc_count;			/* stat for coalesced packets */
+	u64 rsc_flush;			/* stats for flushed packets */
 
 	unsigned int size;		/* length in bytes */
 	dma_addr_t dma;			/* phys. address of descriptor ring */
@@ -375,7 +376,8 @@
 #ifdef IXGBE_FCOE
 	struct ixgbe_fcoe fcoe;
 #endif /* IXGBE_FCOE */
-	u64 rsc_count;
+	u64 rsc_total_count;
+	u64 rsc_total_flush;
 	u32 wol;
 	u16 eeprom_version;
 };