netdev - Re: RFC: unit tests for kernel GTP module

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Message-ID: <20170217102222.GA5566@splinter.mtl.com>
Date:   Fri, 17 Feb 2017 12:22:22 +0200
From:   Ido Schimmel <idosch@...sch.org>
To:     Harald Welte <laforge@...monks.org>
Cc:     osmocom-net-gprs@...ts.osmocom.org, netdev@...r.kernel.org,
        Pablo Neira Ayuso <pablo@...monks.org>,
        Andreas Schultz <aschultz@...p.net>, jiri@...lanox.com,
        olichtne@...hat.com
Subject: Re: RFC: unit tests for kernel GTP module

Hi,

On Thu, Feb 16, 2017 at 11:08:01PM +0100, Harald Welte wrote:
> Also, if netdev folks have some ideas/pointers about possible
> frameworks/tools for this kind of testing [it must exist for at least
> some other kernel networking code?]: Please let me know.  I'd be
> interested to have a look if there's something that can be used as a
> basis (starting network namespaces, sending/transmitting packets, test
> case startup/teardown, ...)

I'm not sure it meets all your needs, but we use LNST [1] to test our
code. You can see the tests (recipes) here [2]. You can create network
namespaces, send / receive packets, run arbitrary shell commands and
use existing test modules (e.g., ping, netperf) which return pass /
fail.

Adding Jiri and Ondrej, who is currently in the process of refactoring
the code and also familiar with more LNST use cases, such as those
employed by Redhat.

1. https://github.com/jpirko/lnst
2. https://github.com/jpirko/lnst/tree/master/recipes/