netdev - Re: net: dsa: lantiq_gswip: getting the first selftests to pass

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Date:   Wed, 3 Aug 2022 23:50:40 +0200
From:   Hauke Mehrtens <hauke@...ke-m.de>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Vladimir Oltean <olteanv@...il.com>
Cc:     netdev@...r.kernel.org, andrew@...n.ch, vivien.didelot@...il.com,
        f.fainelli@...il.com, Aleksander Jan Bajkowski <olek2@...pl>
Subject: Re: net: dsa: lantiq_gswip: getting the first selftests to pass

Hi Martin,


On 7/29/22 00:09, Martin Blumenstingl wrote:
......
> The vendor driver lists a bunch of possible tables: [1]
> I'll leave any effort for multicast out for now... it's not the main
> use-case I am looking at right now.

Most of these tables are needed because the switch HW can do layer 3 
(IP) multicast handling. I think normally Linux takes care of this with 
DSA drivers and we only tell the switch where to forward based on MAC 
addresses.

> As always: thank you for your amazing explanations, hints and pointers!
> Also I would like to point out that I am still doing all of this in my
> spare time. Whenever you have other conversations to focus on: please
> do so! For me it's not critical if you're getting back to me a few
> days sooner or later.
> 
> 
> Best regards,
> Martin
> 
> 
> [0] https://github.com/paldier/K3C/blob/ca7353eb397090c363632409d9ca568d3cca09c7/ugw/target/linux/lantiq/patches-3.10/7000-NET-lantiq-adds-eth-drv.patch#L2238-L2259
> [1] https://github.com/paldier/K3C/blob/ca7353eb397090c363632409d9ca568d3cca09c7/ugw/target/linux/lantiq/files/drivers/net/ethernet/lantiq/switch-api/ltq_flow_core.h#L164-L192