[LTP] [PATCH 2/2] network/route: Rewrite route-change-gw into new API

[Alexey Kodanev <alexey.kodanev@oracle.com>]

On 25.06.2018 17:01, Petr Vorel wrote:
> Hi Alexey,
> 
>>> don't remember why the rewritten test is
>>> not using background traffic and not changing gateway anymore?
>> The current implementation was based on your suggestion for route-change-dst [1] (I'll
>> mention that in commit message), which uses ns-udpsender.  The other patch [2] is
>> changing gateway.
> 
>> Tests used ns-udpsender in previous implementation and we decided to keep it as  use
>> background traffic isn't sufficient enough [3].
> 
>> But ns-udpsender isn't good enough, as it doesn't check whether destination receive it [4].
>> And indeed you can pass it to any destination and it will not fail, e.g.:
>> ns-udpsender -f 4 -D 1.2.3.4 -p 1 -o -s 1472
> 
>> I guess we need to write another helper, which will listen for packets on remote side.
>> Any recommendations/ideas on it?
> 

It would be good to have this helper in order to extend the tests.
Not sure if it can be used other than here...

The other option is to configure a host on the other end as well,
so that we get responses, and use the standard tools.

> Ping, please.
> I suppose we want these gateway tests do the real client server communication even it's
> done on localhost, via tst_ipaddr_un().
> 
> I guess we want to keep UDP, as it's faster than TCP.
> So I'll create some server, which listens the packets, counts them and reports
> it.
> 
> 
> Kind regards,
> Petr
> 
> 
>> Kind regards,
>> Petr
> 
>> [1] http://lists.linux.it/pipermail/ltp/2017-August/005367.html
>> [2] https://lists.linux.it/pipermail/ltp/2018-May/008152.html
>> [3] http://lists.linux.it/pipermail/ltp/2017-July/005125.html
>> [4] http://lists.linux.it/pipermail/ltp/2017-August/005336.html