netdev - Re: [PATCH net-next v2 0/7] Introduce HSR offload support for ICSSG

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: <69043091-dd59-4b7a-aae0-34f9695b378d@ti.com>
Date: Wed, 14 Aug 2024 11:55:57 +0530
From: MD Danish Anwar <danishanwar@...com>
To: Andrew Lunn <andrew@...n.ch>
CC: Dan Carpenter <dan.carpenter@...aro.org>,
        Jan Kiszka
	<jan.kiszka@...mens.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Javier
 Carrasco <javier.carrasco.cruz@...il.com>,
        Jacob Keller
	<jacob.e.keller@...el.com>,
        Diogo Ivo <diogo.ivo@...mens.com>, Simon Horman
	<horms@...nel.org>,
        Richard Cochran <richardcochran@...il.com>,
        Paolo Abeni
	<pabeni@...hat.com>, Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet
	<edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>,
        Roger Quadros
	<rogerq@...nel.org>
Subject: Re: [PATCH net-next v2 0/7] Introduce HSR offload support for ICSSG

Hi Andrew,

On 13/08/24 8:19 pm, Andrew Lunn wrote:
> On Tue, Aug 13, 2024 at 01:12:26PM +0530, MD Danish Anwar wrote:
>> Hi All,
>> This series introduces HSR offload support for ICSSG driver. To support HSR
>> offload to hardware, ICSSG HSR firmware is used.
> 
> Oh, no, not another firmware. How does this interact with using the
> switch firmware and switchdev? I see in your examples you talk about
> HSR to Dual EMAC, but what about HSR and Switchdev?
> 

HSR to Switch mode or switch mode to HSR is not supported by the firmware.

Only dual EMAC to Switch , dual EMAC to HSR, switch to dual EMAC and HSR
to dual EMAC is supported.

Software HSR, software Switch / bridging can be done only with dual EMAC
firmware.

To summarize,
Dual EMAC firmware - Supports normal Ethernet operations, Can do
software bridging, software HSR
Switch Firmware - Can do bridging in hardware. For software bridging
this firmware is not needed, DUAL EMAC firmware will be used.
HSR firmware - Can do HSR offloading in hardware. For software offload
this firmware is not needed, dual EMAC firmware will be used for that.

By default the firmware is Dual EMAC firmware. Firmware will only be
changed when offloading in hardware is needed.

> How many more different firmwares do you have?
> 

We have these 3 firmwares only for ICSSG.

> 	Andrew

-- 
Thanks and Regards,
Danish