netdev - Re: [DSA] fallback PTP to master port when switch does not support it

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Message-ID: <20220405124851.38fb977d@kernel.org>
Date:   Tue, 5 Apr 2022 12:48:51 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Matej Zachar <zachar.matej@...il.com>, netdev@...r.kernel.org
Subject: Re: [DSA] fallback PTP to master port when switch does not support
 it

On Tue, 5 Apr 2022 00:04:30 +0200 Andrew Lunn wrote:
> What i don't like about your proposed fallback is that it gives the
> impression the slave ports actually support PTP, when they do not.

+1, running PTP on the master means there is a non-PTP-aware switch 
in the path, which should not be taken lightly.