84 lines
2.3 KiB
ReStructuredText
84 lines
2.3 KiB
ReStructuredText
.. _networking_with_eth_qemu:
|
|
|
|
Networking with QEMU Ethernet
|
|
#############################
|
|
|
|
.. contents::
|
|
:local:
|
|
:depth: 2
|
|
|
|
This page describes how to set up a virtual network between a (Linux) host
|
|
and a Zephyr application running in QEMU.
|
|
|
|
In this example, the :ref:`sockets-echo-server-sample` sample application from
|
|
the Zephyr source distribution is run in QEMU. The Zephyr instance is
|
|
connected to a Linux host using a tuntap device which is modeled in Linux as
|
|
an Ethernet network interface.
|
|
|
|
Prerequisites
|
|
*************
|
|
|
|
On the Linux Host, fetch the Zephyr ``net-tools`` project, which is located
|
|
in a separate Git repository:
|
|
|
|
.. code-block:: console
|
|
|
|
git clone https://github.com/zephyrproject-rtos/net-tools
|
|
|
|
|
|
Basic Setup
|
|
***********
|
|
|
|
For the steps below, you will need two terminal windows:
|
|
|
|
* Terminal #1 is terminal window with net-tools being the current
|
|
directory (``cd net-tools``)
|
|
* Terminal #2 is your usual Zephyr development terminal,
|
|
with the Zephyr environment initialized.
|
|
|
|
When configuring the Zephyr instance, you must select the correct Ethernet
|
|
driver for QEMU connectivity:
|
|
|
|
* For ``qemu_x86``, select ``Intel(R) PRO/1000 Gigabit Ethernet driver``
|
|
Ethernet driver. Driver is called ``e1000`` in Zephyr source tree.
|
|
* For ``qemu_cortex_m3``, select ``TI Stellaris MCU family ethernet driver``
|
|
Ethernet driver. Driver is called ``stellaris`` in Zephyr source tree.
|
|
* For ``mps2_an385``, select ``SMSC911x/9220 Ethernet driver`` Ethernet driver.
|
|
Driver is called ``smsc911x`` in Zephyr source tree.
|
|
|
|
Step 1 - Create Ethernet interface
|
|
==================================
|
|
|
|
Before starting QEMU with network connectivity, a network interface
|
|
should be created in the host system.
|
|
|
|
In terminal #1, type:
|
|
|
|
.. code-block:: console
|
|
|
|
./net-setup.sh
|
|
|
|
You can tweak the behavior of the ``net-setup.sh`` script. See various options
|
|
by running ``net-setup.sh`` like this:
|
|
|
|
.. code-block:: console
|
|
|
|
./net-setup.sh --help
|
|
|
|
|
|
Step 2 - Start app in QEMU board
|
|
================================
|
|
|
|
Build and start the :ref:`sockets-echo-server-sample` sample application.
|
|
In this example, the qemu_x86 board is used.
|
|
|
|
In terminal #2, type:
|
|
|
|
.. zephyr-app-commands::
|
|
:zephyr-app: samples/net/sockets/echo_server
|
|
:host-os: unix
|
|
:board: qemu_x86
|
|
:gen-args: -DOVERLAY_CONFIG=overlay-e1000.conf
|
|
:goals: run
|
|
:compact:
|