linux-kernel - [[RFC PATCH v4 net-next] 0/2] net: dsa: hsr: Enable HSR HW offloading for KSZ9477

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Message-Id: <20230906152801.921664-1-lukma@denx.de>
Date:   Wed,  6 Sep 2023 17:27:59 +0200
From:   Lukasz Majewski <lukma@...x.de>
To:     Tristram.Ha@...rochip.com, Eric Dumazet <edumazet@...gle.com>,
        Andrew Lunn <andrew@...n.ch>, davem@...emloft.net,
        Woojung Huh <woojung.huh@...rochip.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Oleksij Rempel <o.rempel@...gutronix.de>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, UNGLinuxDriver@...rochip.com,
        Oleksij Rempel <linux@...pel-privat.de>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Lukasz Majewski <lukma@...x.de>
Subject: [[RFC PATCH v4 net-next] 0/2] net: dsa: hsr: Enable HSR HW offloading for KSZ9477

This patch series provides support for HSR HW offloading in KSZ9477
switch IC.

To test this feature:
ip link add name hsr0 type hsr slave1 lan1 slave2 lan2 supervision 45 version 1
ip link set dev lan1 up
ip link set dev lan2 up
ip a add 192.168.0.1/24 dev hsr0
ip link set dev hsr0 up

To remove HSR network device:
ip link del hsr0

It is also possible to create another HSR interface, but it will
only support HSR is software - e.g.
ip link add name hsr1 type hsr slave1 lan3 slave2 lan4 supervision 45 version 1

Test HW:
Two KSZ9477-EVB boards with HSR ports set to "Port1" and "Port2".

Performance SW used:
nuttcp -S --nofork
nuttcp -vv -T 60 -r 192.168.0.2
nuttcp -vv -T 60 -t 192.168.0.2

Code: v6.5-rc7 Linux repository
Tested HSR v0 and v1
Results:
With KSZ9477 offloading support added: RX: 100 Mbps TX: 98 Mbps
With no offloading 		       RX: 63 Mbps  TX: 63 Mbps


Lukasz Majewski (2):
  net: dsa: Extend ksz9477 TAG setup to support HSR frames duplication
  net: dsa: hsr: Enable in KSZ9477 switch HW HSR offloading

 drivers/net/dsa/microchip/ksz9477.c    | 81 ++++++++++++++++++++++++++
 drivers/net/dsa/microchip/ksz9477.h    |  2 +
 drivers/net/dsa/microchip/ksz_common.c | 76 ++++++++++++++++++++++++
 drivers/net/dsa/microchip/ksz_common.h |  3 +
 net/dsa/tag_ksz.c                      |  8 +++
 5 files changed, 170 insertions(+)

-- 
2.20.1