[dpdk-dev] [PATCH 2/2] igb: fix VF statistic wraparound handling macro
Harry van Haaren
harry.van.haaren at intel.com
Mon Oct 12 18:45:33 CEST 2015
Fix a misinterpreatation of VF statistic macro in e1000/igb.
Signed-off-by: Harry van Haaren <harry.van.haaren at intel.com>
---
drivers/net/e1000/igb_ethdev.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
index 848ef6e..e4911fc 100644
--- a/drivers/net/e1000/igb_ethdev.c
+++ b/drivers/net/e1000/igb_ethdev.c
@@ -246,11 +246,10 @@ static void eth_igb_configure_msix_intr(struct rte_eth_dev *dev);
#define UPDATE_VF_STAT(reg, last, cur) \
{ \
u32 latest = E1000_READ_REG(hw, reg); \
- cur += latest - last; \
+ cur += (latest-last) & UINT_MAX; \
last = latest; \
}
-
#define IGB_FC_PAUSE_TIME 0x0680
#define IGB_LINK_UPDATE_CHECK_TIMEOUT 90 /* 9s */
#define IGB_LINK_UPDATE_CHECK_INTERVAL 100 /* ms */
--
1.9.1
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