linux-kernel - Re: [PATCH net-next 0/3] RSTP SWITCH support for PRU-ICSSM Ethernet driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <0080e79a-cf10-43a1-9fc5-864e2b5f5d7a@lunn.ch>
Date: Thu, 25 Sep 2025 16:19:21 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Parvathi Pudi <parvathi@...thit.com>
Cc: andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com,
	kuba@...nel.org, pabeni@...hat.com, danishanwar@...com,
	rogerq@...nel.org, pmohan@...thit.com, basharath@...thit.com,
	afd@...com, linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, pratheesh@...com,
	prajith@...com, vigneshr@...com, praneeth@...com, srk@...com,
	rogerq@...com, krishna@...thit.com, mohan@...thit.com
Subject: Re: [PATCH net-next 0/3] RSTP SWITCH support for PRU-ICSSM Ethernet
 driver

On Thu, Sep 25, 2025 at 07:32:09PM +0530, Parvathi Pudi wrote:
> Hi,
> 
> The DUAL-EMAC patch series for Megabit Industrial Communication Sub-system
> (ICSSM), which provides the foundational support for Ethernet functionality
> over PRU-ICSS on the TI SOCs (AM335x, AM437x, and AM57x), was merged into
> net-next recently [1].
> 
> This patch series enhances the PRU-ICSSM Ethernet driver to support
> RSTP SWITCH mode, which has been implemented based on "switchdev" and
> interacts with "mstp daemon" to support Rapid Spanning Tree Protocol
> (RSTP) as well.

Is there anything in this patchset which is specific to RSTP? In
general, there is no difference between STP and RSTP. STP is generally
done in the kernel as part of the kernel bridge code. RSTP does it in
user space. But the hardware driver does not care if it is STP or
RSTP, it is the same API to the layer above.

	Andrew