e1000: fix total byte statistics

This patch fixes a bug in reading the 64 bit register reading
which was causing the total octets counters to show zero.
Now the code reads both the lower and higher 32 bits.
Tested in testpmd, byte values are correct.

Fixes: 805803445a02 ("e1000: support EM devices (also known as e1000/e1000e)")

Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>

diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
index 848ef6e..2b081b1 100644 (file)
--- a/drivers/net/e1000/igb_ethdev.c
+++ b/drivers/net/e1000/igb_ethdev.c
@@ -1316,8 +1316,10 @@ eth_igb_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *rte_stats)
        stats->roc += E1000_READ_REG(hw, E1000_ROC);
        stats->rjc += E1000_READ_REG(hw, E1000_RJC);
 
-       stats->tor += E1000_READ_REG(hw, E1000_TORH);
-       stats->tot += E1000_READ_REG(hw, E1000_TOTH);
+       stats->tor += E1000_READ_REG(hw, E1000_TORL);
+       stats->tor += ((uint64_t)E1000_READ_REG(hw, E1000_TORH) << 32);
+       stats->tot += E1000_READ_REG(hw, E1000_TOTL);
+       stats->tot += ((uint64_t)E1000_READ_REG(hw, E1000_TOTH) << 32);
 
        stats->tpr += E1000_READ_REG(hw, E1000_TPR);
        stats->tpt += E1000_READ_REG(hw, E1000_TPT);