ixgbe: fix ethtool -A|a behavior
We were basicly ignoring ethtool users request for FC autoneg
and replying to queries with a "best guess". This patch
enables the driver to store if we want to enable/disable
autoneg FC and do the correct behavior.
Signed-off-by: Don Skidmore <donald.c.skidmore@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_82598.c b/drivers/net/ixgbe/ixgbe_82598.c
index ed265a7..de4db0d 100644
--- a/drivers/net/ixgbe/ixgbe_82598.c
+++ b/drivers/net/ixgbe/ixgbe_82598.c
@@ -411,7 +411,8 @@
/* Decide whether to use autoneg or not. */
hw->mac.ops.check_link(hw, &speed, &link_up, false);
- if (hw->phy.multispeed_fiber && (speed == IXGBE_LINK_SPEED_1GB_FULL))
+ if (!hw->fc.disable_fc_autoneg && hw->phy.multispeed_fiber &&
+ (speed == IXGBE_LINK_SPEED_1GB_FULL))
ret_val = ixgbe_fc_autoneg(hw);
if (ret_val)
diff --git a/drivers/net/ixgbe/ixgbe_common.c b/drivers/net/ixgbe/ixgbe_common.c
index 8cfd3fd..63ab667 100644
--- a/drivers/net/ixgbe/ixgbe_common.c
+++ b/drivers/net/ixgbe/ixgbe_common.c
@@ -1937,7 +1937,8 @@
/* Decide whether to use autoneg or not. */
hw->mac.ops.check_link(hw, &speed, &link_up, false);
- if (hw->phy.multispeed_fiber && (speed == IXGBE_LINK_SPEED_1GB_FULL))
+ if (!hw->fc.disable_fc_autoneg && hw->phy.multispeed_fiber &&
+ (speed == IXGBE_LINK_SPEED_1GB_FULL))
ret_val = ixgbe_fc_autoneg(hw);
if (ret_val)
diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c
index 34b4a84..55970ec 100644
--- a/drivers/net/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ixgbe/ixgbe_ethtool.c
@@ -234,7 +234,16 @@
struct ixgbe_adapter *adapter = netdev_priv(netdev);
struct ixgbe_hw *hw = &adapter->hw;
- pause->autoneg = (hw->fc.current_mode == ixgbe_fc_full ? 1 : 0);
+ /*
+ * Flow Control Autoneg isn't on if
+ * - we didn't ask for it OR
+ * - it failed, we know this by tx & rx being off
+ */
+ if (hw->fc.disable_fc_autoneg ||
+ (hw->fc.current_mode == ixgbe_fc_none))
+ pause->autoneg = 0;
+ else
+ pause->autoneg = 1;
if (hw->fc.current_mode == ixgbe_fc_rx_pause) {
pause->rx_pause = 1;
@@ -252,8 +261,12 @@
struct ixgbe_adapter *adapter = netdev_priv(netdev);
struct ixgbe_hw *hw = &adapter->hw;
- if ((pause->autoneg == AUTONEG_ENABLE) ||
- (pause->rx_pause && pause->tx_pause))
+ if (pause->autoneg != AUTONEG_ENABLE)
+ hw->fc.disable_fc_autoneg = true;
+ else
+ hw->fc.disable_fc_autoneg = false;
+
+ if (pause->rx_pause && pause->tx_pause)
hw->fc.requested_mode = ixgbe_fc_full;
else if (pause->rx_pause && !pause->tx_pause)
hw->fc.requested_mode = ixgbe_fc_rx_pause;
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index ae2af45..286ecc0 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -3167,10 +3167,12 @@
/* default flow control settings */
hw->fc.requested_mode = ixgbe_fc_full;
+ hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */
hw->fc.high_water = IXGBE_DEFAULT_FCRTH;
hw->fc.low_water = IXGBE_DEFAULT_FCRTL;
hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
hw->fc.send_xon = true;
+ hw->fc.disable_fc_autoneg = false;
/* enable itr by default in dynamic mode */
adapter->itr_setting = 1;
diff --git a/drivers/net/ixgbe/ixgbe_type.h b/drivers/net/ixgbe/ixgbe_type.h
index 2b2ecba..030ff0a 100644
--- a/drivers/net/ixgbe/ixgbe_type.h
+++ b/drivers/net/ixgbe/ixgbe_type.h
@@ -2005,6 +2005,7 @@
u16 pause_time; /* Flow Control Pause timer */
bool send_xon; /* Flow control send XON */
bool strict_ieee; /* Strict IEEE mode */
+ bool disable_fc_autoneg; /* Turn off autoneg FC mode */
enum ixgbe_fc_mode current_mode; /* FC mode in effect */
enum ixgbe_fc_mode requested_mode; /* FC mode requested by caller */
};