# Features

Tab QCS6490/QCS5430
Tab QCS9100/QCS9075

- *class* tabincludedirective

    - ## Energy Efficient Ethernet

EEE is an optional operational mode that helps in reducing the
consumption of power while transmitting and receiving data. When there
is no data to transmit or receive, this feature allows the MAC sublayer
and a family of physical layers (PHY) to operate in the low-power idle
(LPI) mode.

During link negotiation, the link partners learn about the capabilities
and features, such as EEE, supported by the remote entity. Based on the
supported capabilities, features, and data transfer state, the MAC
determines whether the system should enter or exit the LPI mode and
communicates this information to the PHY.

The EEE feature specifies the capabilities and negotiation methods that
the link partners can use to:

- Determine whether EEE is supported.
- Select the set of parameters that are common to both the devices.

Related information:

- [Configure energy efficient Ethernet](https://docs.qualcomm.com/doc/80-70017-26/topic/enable_and_disable_eee.html#configure-energy-efficient-ethernet)

- *class* tabincludedirective

    - ## DPDK

The Data Plane Development Kit (DPDK) is an open-source software project managed by the Linux Foundation. DPDK provides a set of data plane libraries and network interface controller polling-mode drivers to offload TCP packet processing from the operating system kernel to the processes running in user space. This offloading achieves higher computing efficiency and higher packet throughput than is possible using the interrupt-driven processing provided in the kernel.

Note

DPDK is supported on QCS9100 and works only with [Intel® Ethernet Converged Network Adapter X550-T2](https://www.intel.com/content/www/us/en/products/sku/88209/intel-ethernet-converged-network-adapter-x550t2/specifications.html).

Note

For documentation on DPDK, see [https://core.dpdk.org/doc/](https://core.dpdk.org/doc/).

Related information:

> 
> 
> - [Enable DPDK on IQ-9 Beta EVK](https://docs.qualcomm.com/doc/80-70017-26/topic/enable-dpdk-on-iq9-beta-evk.html#enable-dpdk-on-iq-9-beta-evk)
> - [Run DPDK testpmd](https://docs.qualcomm.com/doc/80-70017-26/topic/tools-qcs9075.html#run-dpdk-testpmd)
> - [DPDK logging and debugging](https://docs.qualcomm.com/doc/80-70017-26/topic/dpdk-logging-and-debugging.html#dpdk-logging-and-debugging)

Last Published: Dec 24, 2024

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