How to control adaptive receive coalesce (Interrupt Throttle Rate moderation) with "ixgbe" driver?

Issue

• How to control adaptive receive coalesce (dynamic Interrupt Throttle Rate moderation) with ixgbe driver?
• Why tx-usecs and "Adaptive RX" coalescing parameter fails to get applied via ethtool for ixgbe based NIC?
• We are using RHEL with Intel card based on ixgbe. Strangely, I was not able to use some of the "Coalescing" setting with this combination using ethtool.
• I was able to modify rx-usecs but I could not modify tx-usecs it is throwing the bellow error:

$ ethtool -C eth0 tx-usecs 1000
Cannot set device coalesce parameters: Invalid argument

• I was not able to set Adaptive RX using ethtool. It does not throw any error when I tried the command but not setting the value as below:

# ethtool -c eth0 (displaying the value)
Coalesce parameters for eth0:
Adaptive RX: off TX: off

# ethtool -C eth0 adaptive-rx on

# ethtool -c eth0
Coalesce parameters for eth0:
Adaptive RX: off TX: off

• Does ixgbe driver support changes with the coalescing values?