[net-next 2/7] igb: Fix stats output on i210/i211 parts.
From: Jeff Kirsher <hidden>
Date: 2012-09-22 10:30:48
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Carolyn Wyborny <redacted> Due to a hardware issue, on i210 and i211 parts, the TNCRS statistic provides an invalid value. This patch changes the update stats function to increment the stat only for non-i210/i211 parts. Signed-off-by: Carolyn Wyborny <redacted> Tested-by: Jeff Pieper <redacted> Signed-off-by: Jeff Kirsher <redacted> --- drivers/net/ethernet/intel/igb/igb_main.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 0730096..60cf3eb 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c@@ -4776,7 +4776,11 @@ void igb_update_stats(struct igb_adapter *adapter, reg = rd32(E1000_CTRL_EXT); if (!(reg & E1000_CTRL_EXT_LINK_MODE_MASK)) { adapter->stats.rxerrc += rd32(E1000_RXERRC); - adapter->stats.tncrs += rd32(E1000_TNCRS); + + /* this stat has invalid values on i210/i211 */ + if ((hw->mac.type != e1000_i210) && + (hw->mac.type != e1000_i211)) + adapter->stats.tncrs += rd32(E1000_TNCRS); } adapter->stats.tsctc += rd32(E1000_TSCTC);
--
1.7.11.4