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From: Andrew Lunn <andrew@lunn.ch>
To: Tobias Waldekranz <tobias@waldekranz.com>
Cc: Vladimir Oltean <olteanv@gmail.com>,
	davem@davemloft.net, kuba@kernel.org, vivien.didelot@gmail.com,
	f.fainelli@gmail.com, roopa@nvidia.com, nikolay@nvidia.com,
	jiri@resnulli.us, idosch@idosch.org, stephen@networkplumber.org,
	netdev@vger.kernel.org, bridge@lists.linux-foundation.org
Subject: Re: [RFC net-next 6/9] net: dsa: Forward offloading
Date: Tue, 4 May 2021 22:33:20 +0200	[thread overview]
Message-ID: <YJGvkJBKPj2WloXf@lunn.ch> (raw)
In-Reply-To: <874kfintzh.fsf@waldekranz.com>

> There is really no need to recompute the static parts of the tags on
> each skb. It would mean moving some knowledge of the tagging format to
> the driver. But that boundary is pretty artificial for
> mv88e6xxx. tag_dsa has no use outside of mv88e6xxx, and mv88e6xxx does
> not work with any other tagger. I suppose you could even move the whole
> tagger to drivers/net/dsa/mv88e6xxx/?
> 
> What do you think?
> 
> Andrew?

We have resisted this before.

What information do you actually need to share between the tagger and
the driver? Both tag_lan9303.c and tag_ocelot_8021q.c do reference
their switch driver data structures, so some sharing is allowed. But
please try to keep the surface areas down.

       Andrew

WARNING: multiple messages have this Message-ID (diff)
From: Andrew Lunn <andrew@lunn.ch>
To: Tobias Waldekranz <tobias@waldekranz.com>
Cc: f.fainelli@gmail.com, jiri@resnulli.us, netdev@vger.kernel.org,
	bridge@lists.linux-foundation.org, vivien.didelot@gmail.com,
	idosch@idosch.org, nikolay@nvidia.com, roopa@nvidia.com,
	kuba@kernel.org, Vladimir Oltean <olteanv@gmail.com>,
	davem@davemloft.net
Subject: Re: [Bridge] [RFC net-next 6/9] net: dsa: Forward offloading
Date: Tue, 4 May 2021 22:33:20 +0200	[thread overview]
Message-ID: <YJGvkJBKPj2WloXf@lunn.ch> (raw)
In-Reply-To: <874kfintzh.fsf@waldekranz.com>

> There is really no need to recompute the static parts of the tags on
> each skb. It would mean moving some knowledge of the tagging format to
> the driver. But that boundary is pretty artificial for
> mv88e6xxx. tag_dsa has no use outside of mv88e6xxx, and mv88e6xxx does
> not work with any other tagger. I suppose you could even move the whole
> tagger to drivers/net/dsa/mv88e6xxx/?
> 
> What do you think?
> 
> Andrew?

We have resisted this before.

What information do you actually need to share between the tagger and
the driver? Both tag_lan9303.c and tag_ocelot_8021q.c do reference
their switch driver data structures, so some sharing is allowed. But
please try to keep the surface areas down.

       Andrew

  reply	other threads:[~2021-05-04 20:33 UTC|newest]

Thread overview: 85+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-26 17:04 [RFC net-next 0/9] net: bridge: Forward offloading Tobias Waldekranz
2021-04-26 17:04 ` [Bridge] " Tobias Waldekranz
2021-04-26 17:04 ` [RFC net-next 1/9] net: dfwd: Constrain existing users to macvlan subordinates Tobias Waldekranz
2021-04-26 17:04   ` [Bridge] " Tobias Waldekranz
2021-04-26 17:04 ` [RFC net-next 2/9] net: bridge: Disambiguate offload_fwd_mark Tobias Waldekranz
2021-04-26 17:04   ` [Bridge] " Tobias Waldekranz
2021-05-02 15:00   ` Ido Schimmel
2021-05-02 15:00     ` [Bridge] " Ido Schimmel
2021-05-03  8:49     ` Tobias Waldekranz
2021-05-03  8:49       ` [Bridge] " Tobias Waldekranz
2021-05-05  7:39       ` Ido Schimmel
2021-05-05  7:39         ` [Bridge] " Ido Schimmel
2021-04-26 17:04 ` [RFC net-next 3/9] net: bridge: switchdev: Recycle unused hwdoms Tobias Waldekranz
2021-04-26 17:04   ` [Bridge] " Tobias Waldekranz
2021-04-27 10:42   ` Nikolay Aleksandrov
2021-04-27 10:42     ` [Bridge] " Nikolay Aleksandrov
2021-04-26 17:04 ` [RFC net-next 4/9] net: bridge: switchdev: Forward offloading Tobias Waldekranz
2021-04-26 17:04   ` [Bridge] " Tobias Waldekranz
2021-04-27 10:35   ` Nikolay Aleksandrov
2021-04-27 10:35     ` [Bridge] " Nikolay Aleksandrov
2021-04-28 22:47     ` Tobias Waldekranz
2021-04-28 22:47       ` [Bridge] " Tobias Waldekranz
2021-04-29  9:16       ` Nikolay Aleksandrov
2021-04-29  9:16         ` [Bridge] " Nikolay Aleksandrov
2021-04-29 14:55         ` Tobias Waldekranz
2021-04-29 14:55           ` [Bridge] " Tobias Waldekranz
2021-05-02 15:04   ` Ido Schimmel
2021-05-02 15:04     ` [Bridge] " Ido Schimmel
2021-05-03  8:53     ` Tobias Waldekranz
2021-05-03  8:53       ` [Bridge] " Tobias Waldekranz
2021-05-06 11:01       ` Vladimir Oltean
2021-05-06 11:01         ` [Bridge] " Vladimir Oltean
2021-04-26 17:04 ` [RFC net-next 5/9] net: dsa: Track port PVIDs Tobias Waldekranz
2021-04-26 17:04   ` [Bridge] " Tobias Waldekranz
2021-04-26 19:40   ` Vladimir Oltean
2021-04-26 19:40     ` [Bridge] " Vladimir Oltean
2021-04-26 20:05     ` Tobias Waldekranz
2021-04-26 20:05       ` [Bridge] " Tobias Waldekranz
2021-04-26 20:28       ` Vladimir Oltean
2021-04-26 20:28         ` [Bridge] " Vladimir Oltean
2021-04-27  9:12         ` Tobias Waldekranz
2021-04-27  9:12           ` [Bridge] " Tobias Waldekranz
2021-04-27  9:27           ` Vladimir Oltean
2021-04-27  9:27             ` [Bridge] " Vladimir Oltean
2021-04-27 10:07           ` Vladimir Oltean
2021-04-27 10:07             ` [Bridge] " Vladimir Oltean
2021-04-28 23:10             ` Tobias Waldekranz
2021-04-28 23:10               ` [Bridge] " Tobias Waldekranz
2021-04-26 17:04 ` [RFC net-next 6/9] net: dsa: Forward offloading Tobias Waldekranz
2021-04-26 17:04   ` [Bridge] " Tobias Waldekranz
2021-04-27 10:17   ` Vladimir Oltean
2021-04-27 10:17     ` [Bridge] " Vladimir Oltean
2021-05-04 14:44     ` Tobias Waldekranz
2021-05-04 14:44       ` [Bridge] " Tobias Waldekranz
2021-05-04 15:21       ` Vladimir Oltean
2021-05-04 15:21         ` [Bridge] " Vladimir Oltean
2021-05-04 20:07         ` Tobias Waldekranz
2021-05-04 20:07           ` [Bridge] " Tobias Waldekranz
2021-05-04 20:33           ` Andrew Lunn [this message]
2021-05-04 20:33             ` Andrew Lunn
2021-05-04 21:24             ` Tobias Waldekranz
2021-05-04 21:24               ` [Bridge] " Tobias Waldekranz
2021-05-04 20:58           ` Vladimir Oltean
2021-05-04 20:58             ` [Bridge] " Vladimir Oltean
2021-05-04 22:12             ` Tobias Waldekranz
2021-05-04 22:12               ` [Bridge] " Tobias Waldekranz
2021-05-04 23:04               ` Vladimir Oltean
2021-05-04 23:04                 ` [Bridge] " Vladimir Oltean
2021-05-05  9:01                 ` Tobias Waldekranz
2021-05-05  9:01                   ` [Bridge] " Tobias Waldekranz
2021-05-05 16:12                   ` Vladimir Oltean
2021-05-05 16:12                     ` [Bridge] " Vladimir Oltean
2021-04-26 17:04 ` [RFC net-next 7/9] net: dsa: mv88e6xxx: Allocate a virtual DSA port for each bridge Tobias Waldekranz
2021-04-26 17:04   ` [Bridge] " Tobias Waldekranz
2021-04-26 17:04 ` [RFC net-next 8/9] net: dsa: mv88e6xxx: Map virtual bridge port in PVT Tobias Waldekranz
2021-04-26 17:04   ` [Bridge] " Tobias Waldekranz
2021-04-26 17:04 ` [RFC net-next 9/9] net: dsa: mv88e6xxx: Forward offloading Tobias Waldekranz
2021-04-26 17:04   ` [Bridge] " Tobias Waldekranz
2021-04-27  1:31   ` kernel test robot
2021-05-02 14:58 ` [RFC net-next 0/9] net: bridge: " Ido Schimmel
2021-05-02 14:58   ` [Bridge] " Ido Schimmel
2021-05-03  9:44   ` Tobias Waldekranz
2021-05-03  9:44     ` [Bridge] " Tobias Waldekranz
2021-05-06 10:59     ` Vladimir Oltean
2021-05-06 10:59       ` [Bridge] " Vladimir Oltean

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