linux-kernel - Aw: Re: Re: [PATCH v2 4/5] arm: dts: mt7623: mux phy0 on Bananapi BPI-R2

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Date:   Sat, 4 Feb 2023 14:07:22 +0100
From:   Frank Wunderlich <frank-w@...lic-files.de>
To:     Arınç ÜNAL <arinc.unal@...nc9.com>
Cc:     arinc9.unal@...il.com, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        erkin.bozoglu@...ont.com, Sean Wang <sean.wang@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>
Subject: Aw: Re:  Re: [PATCH v2 4/5] arm: dts: mt7623: mux phy0 on Bananapi
 BPI-R2

Hi

> Gesendet: Samstag, 04. Februar 2023 um 13:12 Uhr
> Von: "Arınç ÜNAL" <arinc.unal@...nc9.com>
> An: "Frank Wunderlich" <frank-w@...lic-files.de>
> Cc: arinc9.unal@...il.com, "Rob Herring" <robh+dt@...nel.org>, "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>, "Matthias Brugger" <matthias.bgg@...il.com>, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org, erkin.bozoglu@...ont.com, "Sean Wang" <sean.wang@...iatek.com>, "DENG Qingfang" <dqfext@...il.com>
> Betreff: Re: Aw: Re: [PATCH v2 4/5] arm: dts: mt7623: mux phy0 on Bananapi BPI-R2
>
> On 4.02.2023 14:43, Frank Wunderlich wrote:
> >> Gesendet: Samstag, 04. Februar 2023 um 11:27 Uhr
> >> Von: "Frank Wunderlich" <frank-w@...lic-files.de>
> >> An: "Arınç ÜNAL" <arinc.unal@...nc9.com>
> >> Cc: arinc9.unal@...il.com, "Rob Herring" <robh+dt@...nel.org>, "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>, "Matthias Brugger" <matthias.bgg@...il.com>, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org, erkin.bozoglu@...ont.com, "Sean Wang" <sean.wang@...iatek.com>, "DENG Qingfang" <dqfext@...il.com>
> >> Betreff: Aw: Re: [PATCH v2 4/5] arm: dts: mt7623: mux phy0 on Bananapi BPI-R2
> >>
> >> Hi aranc,
> >>
> >> have tested this series, basicly it works, but i get only ~620 Mbits/sec (much more i will need on wan) in tx-mode of r2, rx-mode (iperf3 -c IP -R on r2) gets full 939 Mbits/sec. Both no retransmitts.
> >>
> >> tried with my laptop which gets 940Mbit/sec in tx mode too...other end is a R2 with 5.15 connected to lan0 (and eth1+aux enabled, dmesg clean so far...for the "kernel log flooded"-comment).
> >>
> >> maybe gmac1 needs to be tweaked a bit (clock-settings)?
> >>
> >> can you confirm this with your board?
> > 
> > tested the vlan_aware way with 5.15.80 and got better result
> > 
> > ip link add br0 type bridge vlan_filtering 1
> > ip l set aux master br0
> > ip l set wan master br0
> > bridge vlan add vid 99 dev wan
> > bridge vlan add vid 99 dev aux
> > bridge vlan
> > ip l s eth1 up
> > ip l s wan up
> > ip a a 192.168.0.11/24 dev eth1
> > ip l s br0 up
> > ip l s aux up
> > 
> > i see traffic on eth1 increasing and iperf3 shows in both directions ~940Mbit/s, no strange mesages in dmesg while testing...where do you see these?
> 
> You didn't put eth1 on a bridge. I suggest you read my mails with higher 
> attention so both of our time is spent efficiently.

sorry if i misseed this detail, but it was not part of the instructions i got from mtk and did not found it in our mail-conversion. why do i need to add the gmac into the bridge??

the gmac is connected physically to mt7531 p5, and my vlan_aware bridge bridges this port (aux=p5) with wan, 
so i see no need to add eth1 to this bridge too...traffic on wan is tagged with vlan 99 and leaving untagged
on aux which is arriving eth1...

> > tested vlan-way with 6.2 and felix' Patches to more comparable with your test...and got same result (~625Mbit/s in tx and 940Mbit/s in rx-mode=-R on r2)...so it seems anything between 5.15 and 6.2 reduced gmac1 tx bandwidth.
> 
> I don't see an incentive to investigate unless the issue is confirmed on 
> a daily netdev/net-next.git main tree.

have same result on net-next/main with your series, no additional patches on top except adding my build-script and defconfig.

> > 
> > to summarize:
> > 
> > i get same result with your patches and my old vlan_bridge way with same codebase...how do i see your problem with the vlan-bridge-way? Do you test with bpi-r2 or only any other board and change r2 to have same DT?
> 
> I tested this only on a Bananapi BPI-R2 using the devicetree with this 
> series applied on a few days old netdev/net-next.git main tree.

btw. i do this in my currently very limited free time in short chunks, so please forgive me if i miss a detail.

> Arınç