[PATCH v4 2/5] dts: parameterize what ports the TG sends packets to

[Juraj Linkeš]

On 23. 9. 2024 20:42, jspewock at iol.unh.edu wrote:
> From: Jeremy Spewock <jspewock at iol.unh.edu>
> 
> Previously in the DTS framework the helper methods in the TestSuite
> class designated ports as either ingress or egress ports and would wrap
> the methods of the traffic generator to allow packets to only flow to
> those designated ingress or egress ports. This is undesirable in some
> cases, such as when you have virtual functions on top of your port,
> where the TG ports can send to more than one SUT port. This patch
> solves this problem by creating optional parameters that allow the user
> to specify which port to gather the MAC addresses from when sending and
> receiving packets.
> 
> Signed-off-by: Jeremy Spewock <jspewock at iol.unh.edu>
> ---

I'm not a fan of exposing the functionality in this way. The developers 
needs to fiddle with ports and there are likely better ways to 
accomplish this.

Ideally, the only information the dev would provide that a test case is 
a VF test case and everything else would happen under the hood in the 
TestCase class.

Barring that, we could decorate the whole TestSuite as requiring VFs, 
which would result in automatically creating and removing the VFs in 
setup/teardown (test case marking would be similar, but possibly more 
complicated, especially if we wanted to abide only by test cases 
selected in a given test run). Then the test cases could pass a simple 
vf=True parameter to the send/receive methods.