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Date:   Fri, 9 Dec 2022 16:47:23 +0200
From:   Vladimir Oltean <olteanv@gmail.com>
To:     Horatiu Vultur <horatiu.vultur@microchip.com>
Cc:     Michael Walle <michael@walle.cc>, Steen.Hegelund@microchip.com,
        UNGLinuxDriver@microchip.com, daniel.machon@microchip.com,
        davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
        lars.povlsen@microchip.com, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
        pabeni@redhat.com, richardcochran@gmail.com
Subject: Re: [PATCH net-next v3 4/4] net: lan966x: Add ptp trap rules
Message-ID: <20221209144723.qdbf2wr6vp2dmty7@skbuf>
References: <c8b2ef73330c7bc5d823997dd1c8bf09@walle.cc>
 <20221208130444.xshazhpg4e2utvjs@soft-dev3-1>
 <adb8e2312b169d13e756ff23c45872c3@walle.cc>
 <20221209092904.asgka7zttvdtijub@soft-dev3-1>
 <c8b755672e20c223a83bc3cd4332f8cd@walle.cc>
 <20221209125857.yhsqt4nj5kmavhmc@soft-dev3-1>
 <20221209125611.m5cp3depjigs7452@skbuf>
 <a821d62e2ed2c6ec7b305f7d34abf0ba@walle.cc>
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On Fri, Dec 09, 2022 at 04:43:28PM +0200, Vladimir Oltean wrote:
> On Fri, Dec 09, 2022 at 03:20:58PM +0100, Horatiu Vultur wrote:
> > On ocelot, the vcap is enabled at port initialization, while on other
> > platforms(lan966x and sparx5) you have the option to enable or disable.
> 
> Even if that wasn't the case, I'd still consider enabling/disabling VCAP
> lookups privately in the ocelot driver when there are non-tc users of
> traps, instead of requiring users to do anything with tc. It's simply
> too unfriendly for somebody who just wants PTP. You can use devlink
> traps to show which non-tc traps are active.

To put it differently. Why do you even bother to make the driver
auto-install PTP traps, and not let the user do that? It's the same
argument as asking the user enable the VCAP lookups.