VLAN support on OpenBMC

[Joel Stanley]

On Tue, Jul 25, 2017 at 2:11 AM, Ratan K Gupta <ratagupt at in.ibm.com> wrote:
> Hi Gavin,

I think you were looking for Gavin Shan, not Shaun Gavin. I added the
correct Gavin to cc.

>
> OpenBMC has requirement to support the VLAN,After doing the necessary VLAN
> configurations we observed that the openbmc/ncsi chip is not sending the
> tagged packet out.
>
> On the other side,if I ping the openbmc machine from some other linux
> machine
> then tagged packet doesn't reach to openbmc machine.
>
> In order to simplify the testing setup,We made a direct connection with some
> linux machine to openbmc.
>
> Scenario 1: Ping test from test/linux machine to the openbmc machine.
> ========
> Observation:- We captured the packet on the test machine which shows that
> packet
> were going out from the test machine and it was having 8021.q tag
> but it was not reaching to openbmc machine.
>
> Scenario 2: Ping test from openbmc machine to test/linux machine
> ========
> Observation:- Captured packet shows that packet were going out
> from the openbmc machine and it was having 8021.q tag but it was
> not reaching to test machine.
>
> Note:- We made sure that packet were going out from the VLAN interface.
>
> Is it related to the NCSI driver? Do we have NCSI driver support on openbmc
> to create the
> VLAN.

Gavin's reply on another thread:

> Currently, NCSI stack doesn't support VLAN. It needs some code to
> support and we need someone to work on it.
>
> There has code supporting VLAN filters. With it, the NCSI channel is
> associated with one or multiple VLANs. However, we need add code in
> ftgmac100.c to support VLAN based ethernet devices.

Cheers,

Joel