netdev.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Marek Behun <marek.behun@nic.cz>
To: Tobias Waldekranz <tobias@waldekranz.com>
Cc: "Vladimir Oltean" <olteanv@gmail.com>,
	"Ansuel Smith" <ansuelsmth@gmail.com>,
	netdev@vger.kernel.org, "David S. Miller" <davem@davemloft.net>,
	"Jakub Kicinski" <kuba@kernel.org>,
	"Andrew Lunn" <andrew@lunn.ch>,
	"Vivien Didelot" <vivien.didelot@gmail.com>,
	"Florian Fainelli" <f.fainelli@gmail.com>,
	"Alexei Starovoitov" <ast@kernel.org>,
	"Daniel Borkmann" <daniel@iogearbox.net>,
	"Andrii Nakryiko" <andriin@fb.com>,
	"Eric Dumazet" <edumazet@google.com>,
	"Wei Wang" <weiwan@google.com>,
	"Cong Wang" <cong.wang@bytedance.com>,
	"Taehee Yoo" <ap420073@gmail.com>,
	"Björn Töpel" <bjorn@kernel.org>,
	"zhang kai" <zhangkaiheb@126.com>,
	"Weilong Chen" <chenweilong@huawei.com>,
	"Roopa Prabhu" <roopa@cumulusnetworks.com>,
	"Di Zhu" <zhudi21@huawei.com>,
	"Francis Laniel" <laniel_francis@privacyrequired.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH RFC net-next 0/3] Multi-CPU DSA support
Date: Tue, 13 Apr 2021 17:14:43 +0200	[thread overview]
Message-ID: <20210413171443.1b2b2f88@thinkpad> (raw)
In-Reply-To: <87im4qjl87.fsf@waldekranz.com>

On Tue, 13 Apr 2021 16:46:32 +0200
Tobias Waldekranz <tobias@waldekranz.com> wrote:

> On Tue, Apr 13, 2021 at 02:27, Marek Behun <marek.behun@nic.cz> wrote:
> > On Tue, 13 Apr 2021 01:54:50 +0200
> > Marek Behun <marek.behun@nic.cz> wrote:
> >  
> >> I will look into this, maybe ask some follow-up questions.  
> >
> > Tobias,
> >
> > it seems that currently the LAGs in mv88e6xxx driver do not use the
> > HashTrunk feature (which can be enabled via bit 11 of the
> > MV88E6XXX_G2_TRUNK_MAPPING register).  
> 
> This should be set at the bottom of mv88e6xxx_lag_sync_masks.
> 
> > If we used this feature and if we knew what hash function it uses, we
> > could write a userspace tool that could recompute new MAC
> > addresses for the CPU ports in order to avoid the problem I explained
> > previously...
> >
> > Or the tool can simply inject frames into the switch and try different
> > MAC addresses for the CPU ports until desired load-balancing is reached.
> >
> > What do you think?  
> 
> As you concluded in your followup, not being able to have a fixed MAC
> for the CPU seems weird.
> 
> Maybe you could do the inverse? Allow userspace to set the masks for an
> individual bond/team port in a hash-based LAG, then you can offload that
> to DSA. 

What masks?

  reply	other threads:[~2021-04-13 15:14 UTC|newest]

Thread overview: 68+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-10 13:34 [PATCH RFC net-next 0/3] Multi-CPU DSA support Ansuel Smith
2021-04-10 13:34 ` [PATCH RFC net-next 1/3] net: dsa: allow for multiple CPU ports Ansuel Smith
2021-04-12  3:35   ` DENG Qingfang
2021-04-12  4:41     ` Ansuel Smith
2021-04-12 15:30       ` DENG Qingfang
2021-04-12 16:17         ` Frank Wunderlich
2021-04-10 13:34 ` [PATCH RFC net-next 2/3] net: add ndo for setting the iflink property Ansuel Smith
2021-04-10 13:34 ` [PATCH RFC net-next 3/3] net: dsa: implement ndo_set_netlink for chaning port's CPU port Ansuel Smith
2021-04-10 13:34 ` [PATCH RFC iproute2-next] iplink: allow to change iplink value Ansuel Smith
2021-04-11 17:04   ` Stephen Hemminger
2021-04-11 17:09     ` Vladimir Oltean
2021-04-11 18:01 ` [PATCH RFC net-next 0/3] Multi-CPU DSA support 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 [this message]
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
  -- strict thread matches above, loose matches on Subject: below --
2019-08-24  2:42 Marek Behún
2019-08-24 15:24 ` Andrew Lunn
2019-08-24 17:45   ` 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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210413171443.1b2b2f88@thinkpad \
    --to=marek.behun@nic.cz \
    --cc=andrew@lunn.ch \
    --cc=andriin@fb.com \
    --cc=ansuelsmth@gmail.com \
    --cc=ap420073@gmail.com \
    --cc=ast@kernel.org \
    --cc=bjorn@kernel.org \
    --cc=chenweilong@huawei.com \
    --cc=cong.wang@bytedance.com \
    --cc=daniel@iogearbox.net \
    --cc=davem@davemloft.net \
    --cc=edumazet@google.com \
    --cc=f.fainelli@gmail.com \
    --cc=kuba@kernel.org \
    --cc=laniel_francis@privacyrequired.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=olteanv@gmail.com \
    --cc=roopa@cumulusnetworks.com \
    --cc=tobias@waldekranz.com \
    --cc=vivien.didelot@gmail.com \
    --cc=weiwan@google.com \
    --cc=zhangkaiheb@126.com \
    --cc=zhudi21@huawei.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).