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Message-ID: <3da14763-b495-77eb-e059-b62e496ba7e7@gmail.com> Date: Fri, 2 Sep 2022 11:33:31 -0700 From: Florian Fainelli <f.fainelli@...il.com> To: Vladimir Oltean <vladimir.oltean@....com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org> Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Vivien Didelot <vivien.didelot@...il.com>, Andrew Lunn <andrew@...n.ch>, Vladimir Oltean <olteanv@...il.com>, Claudiu Manoil <claudiu.manoil@....com>, Alexandre Belloni <alexandre.belloni@...tlin.com>, "UNGLinuxDriver@...rochip.com" <UNGLinuxDriver@...rochip.com>, Colin Foster <colin.foster@...advantage.com>, Roopa Prabhu <roopa@...dia.com>, Nikolay Aleksandrov <razor@...ckwall.org>, Tobias Waldekranz <tobias@...dekranz.com>, Marek Behún <kabel@...nel.org>, Ansuel Smith <ansuelsmth@...il.com>, DENG Qingfang <dqfext@...il.com>, Alvin Šipraga <alsi@...g-olufsen.dk>, Linus Walleij <linus.walleij@...aro.org>, Luiz Angelo Daros de Luca <luizluca@...il.com>, Felix Fietkau <nbd@....name>, John Crispin <john@...ozen.org>, Sean Wang <sean.wang@...iatek.com> Subject: Re: [PATCH net-next 0/9] DSA changes for multiple CPU ports (part 4) On 9/2/2022 3:31 AM, Vladimir Oltean wrote: > On Tue, Aug 30, 2022 at 10:59:23PM +0300, Vladimir Oltean wrote: >> This series represents the final part of that effort. We have: >> >> - the introduction of new UAPI in the form of IFLA_DSA_MASTER > > Call for opinions: when I resend this, should I keep rtnl_link_ops, > or should I do what Marek attempted to do, and make the existing iflink > between a user port and its master writable from user space? > https://lore.kernel.org/netdev/20190824024251.4542-4-marek.behun@nic.cz/ > > I'm not sure if we have that many more use cases for rtnl_link_ops.. It's a bit hard to see one right now, I agree. > at some point I was thinking we could change the way in which dsa_loop > probes, and allow dynamic creation of such interfaces using RTM_NEWLINK; > but looking closer at that, it's a bit more complicated, since we'd need > to attach dsa_loop user ports to a virtual switch, and probe all ports > at the same time rather than one by one. Yes, not sure the custom netlink operations would be the preferred way of doing that configuration, maybe module parameters and/or debugfs might just do? -- Florian
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