[PATCH] ixgb: Fix multi-cast packet count in statistics

Fix multi-cast packet count in statistics

Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>

diff -up net-drivers-2.6/drivers/net/ixgb/ixgb_main.c net-drivers-2.6/drivers/net/ixgb.new/ixgb_main.c

1 files changed, 23 insertions, 4 deletions

diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c
index 7d26623d8592..1498b4e42466 100644
--- a/drivers/net/ixgb/ixgb_main.c
+++ b/drivers/net/ixgb/ixgb_main.c
@@ -1526,14 +1526,33 @@ ixgb_change_mtu(struct net_device *netdev, int new_mtu)
 void
 ixgb_update_stats(struct ixgb_adapter *adapter)
 {
+        struct net_device *netdev = adapter->netdev;
+
+        if((netdev->flags & IFF_PROMISC) || (netdev->flags & IFF_ALLMULTI) ||
+           (netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES)) {
+                u64 multi = IXGB_READ_REG(&adapter->hw, MPRCL);
+                u32 bcast_l = IXGB_READ_REG(&adapter->hw, BPRCL);
+                u32 bcast_h = IXGB_READ_REG(&adapter->hw, BPRCH);
+                u64 bcast = ((u64)bcast_h << 32) | bcast_l; 
+
+                multi |= ((u64)IXGB_READ_REG(&adapter->hw, MPRCH) << 32);
+                /* fix up multicast stats by removing broadcasts */
+                multi -= bcast;
+                
+                adapter->stats.mprcl += (multi & 0xFFFFFFFF);
+                adapter->stats.mprch += (multi >> 32);
+                adapter->stats.bprcl += bcast_l; 
+                adapter->stats.bprch += bcast_h;
+        } else {
+                adapter->stats.mprcl += IXGB_READ_REG(&adapter->hw, MPRCL);
+                adapter->stats.mprch += IXGB_READ_REG(&adapter->hw, MPRCH);
+                adapter->stats.bprcl += IXGB_READ_REG(&adapter->hw, BPRCL);
+                adapter->stats.bprch += IXGB_READ_REG(&adapter->hw, BPRCH);
+        }
         adapter->stats.tprl += IXGB_READ_REG(&adapter->hw, TPRL);
         adapter->stats.tprh += IXGB_READ_REG(&adapter->hw, TPRH);
         adapter->stats.gprcl += IXGB_READ_REG(&adapter->hw, GPRCL);
         adapter->stats.gprch += IXGB_READ_REG(&adapter->hw, GPRCH);
-        adapter->stats.bprcl += IXGB_READ_REG(&adapter->hw, BPRCL);
-        adapter->stats.bprch += IXGB_READ_REG(&adapter->hw, BPRCH);
-        adapter->stats.mprcl += IXGB_READ_REG(&adapter->hw, MPRCL);
-        adapter->stats.mprch += IXGB_READ_REG(&adapter->hw, MPRCH);
         adapter->stats.uprcl += IXGB_READ_REG(&adapter->hw, UPRCL);
         adapter->stats.uprch += IXGB_READ_REG(&adapter->hw, UPRCH);
         adapter->stats.vprcl += IXGB_READ_REG(&adapter->hw, VPRCL);