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Message-ID: <497b3f9b6d91a076c67f959ba878583a91b03cf5.camel@redhat.com>
Subject: Re: [net-next PATCH v5 1/4] net: hsr: Provide RedBox support
 (HSR-SAN)
From: Paolo Abeni <pabeni@redhat.com>
To: Lukasz Majewski <lukma@denx.de>, netdev@vger.kernel.org
Cc: Andrew Lunn <andrew@lunn.ch>, Eric Dumazet <edumazet@google.com>, 
 Vladimir Oltean <olteanv@gmail.com>, "David S. Miller"
 <davem@davemloft.net>, Jakub Kicinski <kuba@kernel.org>,  Oleksij Rempel
 <o.rempel@pengutronix.de>, Tristram.Ha@microchip.com, Sebastian Andrzej
 Siewior <bigeasy@linutronix.de>, Ravi Gunasekaran <r-gunasekaran@ti.com>,
 Simon Horman <horms@kernel.org>, Nikita Zhandarovich
 <n.zhandarovich@fintech.ru>, Murali Karicheri <m-karicheri2@ti.com>, Jiri
 Pirko <jiri@resnulli.us>, Dan Carpenter <dan.carpenter@linaro.org>,  Ziyang
 Xuan <william.xuanziyang@huawei.com>, Shigeru Yoshida
 <syoshida@redhat.com>, "Ricardo B. Marliere" <ricardo@marliere.net>,
 linux-kernel@vger.kernel.org
Date: Thu, 18 Apr 2024 10:47:42 +0200
In-Reply-To: <20240415124928.1263240-2-lukma@denx.de>
References: <20240415124928.1263240-1-lukma@denx.de>
	 <20240415124928.1263240-2-lukma@denx.de>
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On Mon, 2024-04-15 at 14:49 +0200, Lukasz Majewski wrote:
> Introduce RedBox support (HSR-SAN to be more precise) for HSR networks.
> Following traffic reduction optimizations have been implemented:
> - Do not send HSR supervisory frames to Port C (interlink)
> - Do not forward to HSR ring frames addressed to Port C
> - Do not forward to Port C frames from HSR ring
> - Do not send duplicate HSR frame to HSR ring when destination is Port C
>=20
> The corresponding patch to modify iptable2 sources has already been sent:
> https://lore.kernel.org/netdev/20240308145729.490863-1-lukma@denx.de/T/
>=20
> Testing procedure:
> ------------------
> The EVB-KSZ9477 has been used for testing on net-next branch
> (SHA1: 5fc68320c1fb3c7d456ddcae0b4757326a043e6f).
>=20
> Ports 4/5 were used for SW managed HSR (hsr1) as first hsr0 for ports 1/2
> (with HW offloading for ksz9477) was created. Port 3 has been used as
> interlink port (single USB-ETH dongle).
>=20
> Configuration - RedBox (EVB-KSZ9477):
> if link set lan1 down;ip link set lan2 down
> ip link add name hsr0 type hsr slave1 lan1 slave2 lan2 supervision 45 ver=
sion 1
> ip link add name hsr1 type hsr slave1 lan4 slave2 lan5 interlink lan3 sup=
ervision 45 version 1
> ip link set lan4 up;ip link set lan5 up
> ip link set lan3 up
> ip addr add 192.168.0.11/24 dev hsr1
> ip link set hsr1 up
>=20
> Configuration - DAN-H (EVB-KSZ9477):
>=20
> ip link set lan1 down;ip link set lan2 down
> ip link add name hsr0 type hsr slave1 lan1 slave2 lan2 supervision 45 ver=
sion 1
> ip link add name hsr1 type hsr slave1 lan4 slave2 lan5 supervision 45 ver=
sion 1
> ip link set lan4 up;ip link set lan5 up
> ip addr add 192.168.0.12/24 dev hsr1
> ip link set hsr1 up
>=20
> This approach uses only SW based HSR devices (hsr1).
>=20
> --------------          -----------------       ------------
> DAN-H  Port5 | <------> | Port5         |       |
>        Port4 | <------> | Port4   Port3 | <---> | PC
>              |          | (RedBox)      |       | (USB-ETH)
> EVB-KSZ9477  |          | EVB-KSZ9477   |       |
> --------------          -----------------       ------------

The above description is obsoleted by follow-up tests, right?

Thanks,

Paolo