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Date:   Mon, 7 Sep 2020 10:49:59 +0200
From:   Frank Wunderlich <frank-w@...lic-files.de>
To:     Landen Chao <landen.chao@...iatek.com>
Cc:     Andrew Lunn <andrew@...n.ch>, dqfext@...il.com,
        Florian Fainelli <f.fainelli@...il.com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        netdev@...r.kernel.org, Sean Wang <sean.wang@...iatek.com>,
        Russell King <linux@...linux.org.uk>,
        "David S . Miller" <davem@...emloft.net>, opensource@...rst.com,
        Rob Herring <robh+dt@...nel.org>,
        linux-mediatek@...ts.infradead.org,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Vivien Didelot <vivien.didelot@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        Frank Wunderlich <frank-w@...lic-files.de>
Subject: Aw: [PATCH net-next v3 0/6] net-next: dsa: mt7530: add support for
 MT7531

Hi

> Gesendet: Samstag, 05. September 2020 um 10:45 Uhr
> Von: "Frank Wunderlich" <frank-w@...lic-files.de>
> similar to bananapi-r2 (mt7530)
...
> reverse-mode:
>
> [ ID] Interval           Transfer     Bitrate         Retr
> [  5]   0.00-10.01  sec  1.05 GBytes   905 Mbits/sec  14533             sender <<<<<<<<<<<
> [  5]   0.00-10.00  sec  1.05 GBytes   905 Mbits/sec                  receiver

these retransmitts are caused by missing pause-statement in devicetree of bananapi-r2. I got them with mainline driver too.

After fixing it [1], i got the expected results with these mt7531-Patches:

iperf3-client on r2

normal mode:
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.10 GBytes   943 Mbits/sec    0             sender
[  5]   0.00-10.00  sec  1.10 GBytes   941 Mbits/sec                  receiver

reverse mode:
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.09 GBytes   939 Mbits/sec    0             sender
[  5]   0.00-10.00  sec  1.09 GBytes   937 Mbits/sec                  receiver

Tested-By: Frank Wunderlich <frank-w@...lic-files.de>

[1] https://patchwork.kernel.org/patch/11760003/

regards Frank

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