Intel® Ethernet Controller E810 Application Device Queues (ADQ)
Configuration Guide
Adapter Preparation
The following variable is used in the examples in this section:
| $iface | The interface in use (PF). |
- Reload the ice driver to remove any previous TC configuration.
rmmod ice sleep 2 modprobe ice - Make sure the interface is up with an IP Address assigned (either through configuration files or ifconfig/ip commands).
- Enable hardware TC offload on the interface.
ethtool -K $iface hw-tc-offload on Note:There is a known issue that allows ADQ configuration to be applied on a VF interface when the hw-tc-offload flag is disabled (set to off) on the VF interface. For details, see Fixed and Known Issues - Read First. - Disable LLDP on the interface. (This is the default setting and the following command should not be necessary.)
ethtool --set-priv-flags $iface fw-lldp-agent off - Enable
channel-pkt-inspect-optimize on the interface.ethtool --set-priv-flags $iface channel-pkt-inspect-optimize on Note:If the ADQ setup includes independent pollers, this flag must be set to off . - [Optional] Enable busy poll private flag(s) for large I/O block size.
The ice driver version 1.1.0 or later includes two private flags that optimize performance of Rx packet processing during ADQ configuration with
busy_poll . These flags should be enabled for applications using large I/O block size. Workloads that benefit from having these two flags turned on include AF_XDP and NVMe/TCP using large block I/O.The first flag is recommended for applications using 64K (or greater) I/O block size:
ethtool --set-priv-flags $iface channel-pkt-clean-bp-stop on The second flag is recommended for applications using 128K (or greater) I/O block size:
ethtool --set-priv-flags $iface channel-pkt-clean-bp-stop-cfg on Note:Both flags must be set to on for the second flag to be enabled. Note:If the ADQ setup includes independent pollers, both bp-stop flags must be set to off. - Verify settings.
ethtool -k $iface | grep "hw-tc" ethtool --show-priv-flags $iface Example output (ice-1.8.x):
hw-tc-offload: on Private flags for ens8f0: link-down-on-close : off fw-lldp-agent : off channel-inline-fd-mark : off channel-pkt-inspect-optimize : on channel-pkt-clean-bp-stop : off channel-pkt-clean-bp-stop-cfg: off vf-true-promisc-support : off mdd-auto-reset-vf : off vf-vlan-pruning : off legacy-rx : off cgu_fast_lock : off dpll_monitor : off extts_filter : off
Example:
For convenience, the commands in this section are condensed below.