From: Andrew Lunn <andrew@lunn.ch>
To: "Marek Behún" <marek.behun@nic.cz>
Cc: netdev@vger.kernel.org, Vivien Didelot <vivien.didelot@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
David Ahern <dsahern@gmail.com>,
Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: [PATCH RFC net-next 0/3] Multi-CPU DSA support
Date: Sat, 24 Aug 2019 17:24:07 +0200 [thread overview]
Message-ID: <20190824152407.GA8251@lunn.ch> (raw)
In-Reply-To: <20190824024251.4542-1-marek.behun@nic.cz>
On Sat, Aug 24, 2019 at 04:42:47AM +0200, Marek Behún wrote:
> Hi,
> this is my attempt to solve the multi-CPU port issue for DSA.
>
> Patch 1 adds code for handling multiple CPU ports in a DSA switch tree.
> If more than one CPU port is found in a tree, the code assigns CPU ports
> to user/DSA ports in a round robin way. So for the simplest case where
> we have one switch with N ports, 2 of them of type CPU connected to eth0
> and eth1, and the other ports labels being lan1, lan2, ..., the code
> assigns them to CPU ports this way:
> lan1 <-> eth0
> lan2 <-> eth1
> lan3 <-> eth0
> lan4 <-> eth1
> lan5 <-> eth0
Hi Marek
That is what i've always argued is a good default. So i'm happy with
this.
> Patch 2 adds a new operation to the net device operations structure.
> Currently we use the iflink property of a net device to report to which
> CPU port a given switch port si connected to. The ip link utility from
> iproute2 reports this as "lan1@eth0". We add a new net device operation,
> ndo_set_iflink, which can be used to set this property. We call this
> function from the netlink handlers.
That is a new idea. Interesting.
I would like to look around and see what else uses this "lan1@eth0"
concept. We need to ensure it is not counter intuitive in general,
when you consider all possible users.
> Patch 3 implements this new ndo_set_iflink operation for DSA slave
> device. Thus the userspace can request a change of CPU port of a given
> port.
So this is all about transmit from the host out the switch. What about
receive? How do you tell the switch which CPU interface it should use
for a port?
Thanks
Andrew
next prev parent reply other threads:[~2019-08-24 15:24 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-24 2:42 [PATCH RFC net-next 0/3] Multi-CPU DSA support Marek Behún
2019-08-24 2:42 ` [PATCH RFC net-next 1/3] net: dsa: allow for multiple CPU ports Marek Behún
2019-08-24 15:43 ` Andrew Lunn
2019-08-24 17:41 ` Marek Behun
2019-08-24 2:42 ` [PATCH RFC net-next 2/3] net: add ndo for setting the iflink property Marek Behún
2019-08-24 2:42 ` [PATCH RFC net-next 3/3] net: dsa: implement ndo_set_netlink for chaning port's CPU port Marek Behún
2019-08-24 15:47 ` Andrew Lunn
2019-08-24 2:42 ` [PATCH RFC iproute2-next] iplink: allow to change iplink value Marek Behún
2019-08-24 15:24 ` Andrew Lunn [this message]
2019-08-24 17:45 ` [PATCH RFC net-next 0/3] Multi-CPU DSA support Marek Behun
2019-08-24 17:54 ` Andrew Lunn
2019-08-25 4:19 ` Marek Behun
2019-08-24 15:40 ` Vladimir Oltean
2019-08-24 15:44 ` Vladimir Oltean
2019-08-24 17:55 ` Marek Behun
2019-08-24 15:56 ` Andrew Lunn
2019-08-24 17:58 ` Marek Behun
2019-08-24 20:04 ` Florian Fainelli
2019-08-24 21:01 ` Marek Behun
2019-08-25 4:08 ` Marek Behun
2019-08-25 7:13 ` Marek Behun
2019-08-25 15:00 ` Florian Fainelli
2021-04-10 13:34 Ansuel Smith
2021-04-11 18:01 ` Marek Behun
2021-04-11 18:08 ` Ansuel Smith
2021-04-11 18:39 ` Andrew Lunn
2021-04-12 2:07 ` Florian Fainelli
2021-04-12 4:53 ` Ansuel Smith
2021-04-11 18:50 ` Vladimir Oltean
2021-04-11 23:53 ` Vladimir Oltean
2021-04-12 2:10 ` Florian Fainelli
2021-04-12 5:04 ` Ansuel Smith
2021-04-12 12:46 ` Tobias Waldekranz
2021-04-12 14:35 ` Vladimir Oltean
2021-04-12 21:06 ` Tobias Waldekranz
2021-04-12 19:30 ` Marek Behun
2021-04-12 21:22 ` Tobias Waldekranz
2021-04-12 21:34 ` Vladimir Oltean
2021-04-12 21:49 ` Tobias Waldekranz
2021-04-12 21:56 ` Marek Behun
2021-04-12 22:06 ` Vladimir Oltean
2021-04-12 22:26 ` Tobias Waldekranz
2021-04-12 22:48 ` Vladimir Oltean
2021-04-12 23:04 ` Marek Behun
2021-04-12 21:50 ` Marek Behun
2021-04-12 22:05 ` Tobias Waldekranz
2021-04-12 22:55 ` Marek Behun
2021-04-12 23:09 ` Tobias Waldekranz
2021-04-12 23:13 ` Tobias Waldekranz
2021-04-12 23:54 ` Marek Behun
2021-04-13 0:27 ` Marek Behun
2021-04-13 0:31 ` Marek Behun
2021-04-13 14:46 ` Tobias Waldekranz
2021-04-13 15:14 ` Marek Behun
2021-04-13 18:16 ` Tobias Waldekranz
2021-04-14 15:14 ` Marek Behun
2021-04-14 18:39 ` Tobias Waldekranz
2021-04-14 23:39 ` Vladimir Oltean
2021-04-15 9:20 ` Tobias Waldekranz
2021-04-13 14:40 ` Tobias Waldekranz
2021-04-12 15:00 ` DENG Qingfang
2021-04-12 16:32 ` Vladimir Oltean
2021-04-12 22:04 ` Marek Behun
2021-04-12 22:17 ` Vladimir Oltean
2021-04-12 22:47 ` Marek Behun
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