use_bridge: add option to create virtual bridge inside worker

[venkata-pyla]

this option creates a virtual bridge inside a worker that
can be used to create isolated network between two or more
devices(qemu) running inside worker

Signed-off-by: venkata pyla venkata.pyla@toshiba-tsip.com

[patersonc]

Hello @venkata-pyla

Thank you for the PR.

I suggest you also add an entry to the README.md to define use_bridge.

Chris

[venkata-pyla]

Hello @patersonc

Thank you for suggestion, i have updated the README file with usage of the option

[venkata-pyla]

Hi,

I think i should give my motivation for sending this PR.

I am working on an open source project Civil Infrastructure Platform where I am utilizing the lava-docker infrastructure to execute tests that involve two devices to communicate each other with different protocols like ssh, chrony etc.

For that i created an isolated network with bridge inside the docker (workers) and which is used for my two qemu targets running as multi-node in lava.

The proposed changes creates the above infrastructure inside the worker only when this flag use_bridge is set in slaves section of the boards file.

I feel this solution may be useful who is using lava-docker and feel free to suggest or modify this PR to make it work better.

Thanks
Venkat

[montjoie]

I am not sure, it is usefull, basicly it is use_tap and the extra_actions could be in boards.yaml.
Probably I need to append a dockcomp_add_cap() to simplify your patch