netdev - Re: [PATCH net-next 3/3 v5] net: dsa: rtl8366rb: Support setting STP state

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Date:   Wed, 6 Oct 2021 13:17:22 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        Alvin Šipraga <alsi@...g-olufsen.dk>,
        Mauri Sandberg <sandberg@...lfence.com>,
        DENG Qingfang <dqfext@...il.com>
Subject: Re: [PATCH net-next 3/3 v5] net: dsa: rtl8366rb: Support setting STP
 state

On Tue, Oct 05, 2021 at 09:47:04PM +0200, Linus Walleij wrote:
> This adds support for setting the STP state to the RTL8366RB
> DSA switch. This rids the following message from the kernel on
> e.g. OpenWrt:
> 
> DSA: failed to set STP state 3 (-95)
> 
> Since the RTL8366RB has one STP state register per FID with
> two bit per port in each, we simply loop over all the FIDs
> and set the state on all of them.
> 
> Cc: Vladimir Oltean <olteanv@...il.com>
> Cc: Alvin Šipraga <alsi@...g-olufsen.dk>
> Cc: Mauri Sandberg <sandberg@...lfence.com>
> Cc: DENG Qingfang <dqfext@...il.com>
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> ---
> ChangeLog v4->v5:
> - Rename register from RTL8368S* to RTL8366RB as all other
>   registers. (RTL8368S is some similar ASIC maybe the same.)
> - Rename registers from "SPT" to "STP", we assume this is just
>   a typo in the vendor tree.
> - Create RTL8366RB_STP_STATE_MASK() and RTL8366RB_STP_STATE()
>   macros and use these.
> ChangeLog v1->v4:
> - New patch after discovering that we can do really nice
>   bridge offloading with these bits.
> ---

Reviewed-by: Vladimir Oltean <olteanv@...il.com>