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arm-autonomy: Create xenguest network bridge

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Add a xenguest-network-bridge script to create a network bridge with the
host interfaces.
Add a xenguest init script to create a xen network interface connected
to the bridge
Add a network interfaces configuration file to have dhcp configuration
on the network bridge
Add xenguest-network-bridge to the default host image
Add XENGUEST_IMAGE_NETWORK_BRIDGE parameter to xenguest-image to let
user setup if a guest should be or not connected to the bridge

Change-Id: Id15fde234386376e89c2562e1ffa935c51affa5b
Issue-Id: SCM-767
Signed-off-by: Bertrand Marquis <bertrand.marquis@arm.com>
Reviewed-by: Diego Sueiro <diego.sueiro@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>
This commit is contained in:
Bertrand Marquis
2020-03-27 10:53:58 +00:00
committed by Jon Mason
parent 16e4f7450e
commit df189a806b
9 changed files with 182 additions and 0 deletions
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meta-arm-autonomy/documentation/xenguest-network-bridge.md
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xenguest network bridge
=======================
Introduction
------------
xenguest-network-bridge is creating a network bridge to allow some guests to
have a direct connection to the external network.
To do this, a bridge is created on the host using brctl with the network
interfaces added to it so that the bridge is connected to the external network.
It is also adding a guest init script which will, for guests configured to use
it, create a virtual network interface for the guest and connect it to the
network bridge on the host.
Usage
-----
On the host the package xenguest-network-bridge must be included in your image.
On the xenguest image of your guest, the parameter NETWORK_BRIDGE must be set
to 1 (using xenguest-mkimage --set-param=NETWORK_BRIDGE=1).
Bitbake parameters
------------------
Several parameters are available to configure the xenguest network bridge
during Yocto project compilation (those can be set in your project local.conf,
for example).
The following parameters are available:
- XENGUEST_NETWORK_BRIDGE_NAME: This variable defines the name of the network
bridge that is created on the host during init.
This is set by default to "xenbr0".
- XENGUEST_NETWORK_BRIDGE_MEMBERS: This variable defines the list of network
interfaces that are added to the bridge when it is created on the host during
init.
This is set by default to "eth0".
- XENGUEST_NETWORK_BRIDGE_CONFIG: This variable defines the configuration file
to use to configure the bridge network. By default it points to have file
configuring the network using dhcp.
You can provide a different file using a bbappend and make this variable
point to it if you want to customize your network configuration.
- XENGUEST_IMAGE_NETWORK_BRIDGE: This variable can be set to 0 or 1 on guest
projects to enable or not the connection of the guest to the host bridge.
This is set by default to "1".