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

Lukasz Majewski
2023-09-11T14:58:53Z

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Dear Community,

> 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(+)
>

Are there any comments regarding this new revision of the HSR support
for KSZ9477 switch?

Best regards,

Lukasz Majewski

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