第 11 章 Configuring network adapter offload settings

Procedure

1. Display the interface’s available offload features and their current state:

   # ethtool -k enp1s0
   ...
   esp-hw-offload: on
   ntuple-filters: off
   rx-vlan-filter: off [fixed]
   ...

   The output depends on the capabilities of the hardware and its driver. Note that you cannot change the state of features that are flagged with [fixed].

2. Temporarily disable an offload feature:

   # ethtool -K <interface> <feature> <on|off>

   • For example, to temporarily disable IPsec Encapsulating Security Payload (ESP) offload on the enp10s0u1 interface, enter:

     # ethtool -K enp10s0u1 esp-hw-offload off

   • For example, to temporarily enable accelerated Receive Flow Steering (aRFS) filtering on the enp10s0u1 interface, enter:

     # ethtool -K enp10s0u1 ntuple-filters on

Verification

1. Display the states of the offload features:

   # ethtool -k enp1s0
   ...
   esp-hw-offload: off
   ntuple-filters: on
   ...

2. Test whether the problem you encountered before changing the offload feature still exists.

   • If the problem no longer exists after changing a specific offload feature:

     1. Contact Red Hat Support and report the problem.
     2. Consider permanently setting the offload feature until a fix is available.

   • If the problem still exists after disabling a specific offload feature:

     1. Reset the setting to its previous state by using the ethtool -K <interface> <feature> <on|off> command.
     2. Enable or disable a different offload feature to narrow down the problem.