From: Stephen Hemminger <stephen@networkplumber.org>
To: Andrew Lunn <andrew@lunn.ch>
Cc: netdev <netdev@vger.kernel.org>,
Florian Fainelli <f.fainelli@gmail.com>,
Vivien Didelot <vivien.didelot@savoirfairelinux.com>,
Woojung.Huh@microchip.com, jbe@pengutronix.de,
sean.wang@mediatek.com, john@phrozen.org
Subject: Re: [PATCH v2 rfc 0/8] IGMP snooping for local traffic
Date: Wed, 6 Sep 2017 08:27:55 -0700 [thread overview]
Message-ID: <20170906082755.58ff6c8f@xeon-e3> (raw)
In-Reply-To: <20170906004703.GB27385@lunn.ch>
On Wed, 6 Sep 2017 02:47:03 +0200
Andrew Lunn <andrew@lunn.ch> wrote:
> > The third and last issue will be explained in a followup email.
>
> Hi DSA hackers
>
> So there is the third issue. It affects just DSA, but it possible
> affects all DSA drivers.
>
> This patchset broken broadcast with the Marvell drivers. It could
> break broadcast on others drivers as well.
>
> What i found is that the Marvell chips don't flood broadcast frames
> between bridged ports. What appears to happen is there is a fdb miss,
> so it gets forwarded to the CPU port for the host to deal with. The
> software bridge when floods it out all ports of the bridge.
>
That sounds like a good feature. There environments where you want
to disable broadcast between certain ports. It lets the bridge get
at the traffic for firewall filtering.
next prev parent reply other threads:[~2017-09-06 15:28 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-05 23:35 [PATCH v2 rfc 0/8] IGMP snooping for local traffic Andrew Lunn
2017-09-05 23:35 ` [PATCH v2 rfc 1/8] net: bridge: Rename mglist to host_joined Andrew Lunn
2017-09-05 23:35 ` [PATCH v2 rfc 2/8] net: bridge: Send notification when host join/leaves a group Andrew Lunn
2017-09-05 23:35 ` [PATCH v2 rfc 3/8] net: bridge: Add/del switchdev object on host join/leave Andrew Lunn
2017-09-05 23:35 ` [PATCH v2 rfc 4/8] net: dsa: slave: Handle switchdev host mdb add/del Andrew Lunn
2017-09-06 15:37 ` Vivien Didelot
2017-09-05 23:35 ` [PATCH v2 rfc 5/8] net: dsa: switch: handle host mdb add/remove Andrew Lunn
2017-09-05 23:35 ` [PATCH v2 rfc 6/8] net: dsa: switch: Don't add CPU port to an mdb by default Andrew Lunn
2017-09-05 23:35 ` [PATCH v2 rfc 7/8] net: dsa: set offload_fwd_mark on received packets Andrew Lunn
2017-09-05 23:35 ` [PATCH v2 rfc 8/8] net: dsa: Fix SWITCHDEV_ATTR_ID_PORT_PARENT_ID Andrew Lunn
2017-09-06 14:46 ` Vivien Didelot
2017-09-06 15:08 ` Andrew Lunn
2017-09-06 16:09 ` Florian Fainelli
2017-09-06 16:29 ` Andrew Lunn
2017-09-06 0:11 ` [PATCH v2 rfc 0/8] IGMP snooping for local traffic Stephen Hemminger
2017-09-06 9:52 ` Nikolay Aleksandrov
2017-09-06 0:47 ` Andrew Lunn
2017-09-06 13:56 ` Vivien Didelot
2017-09-06 14:16 ` Andrew Lunn
2017-09-06 14:27 ` John Crispin
2017-09-06 14:46 ` Matthias May
2017-09-06 15:16 ` Andrew Lunn
2017-09-06 15:27 ` Stephen Hemminger [this message]
2017-09-06 15:49 ` Woojung.Huh
2017-09-06 15:54 ` Roopa Prabhu
2017-09-06 16:06 ` Florian Fainelli
2017-09-06 16:42 ` Andrew Lunn
2017-09-06 19:54 ` Florian Fainelli
2017-09-06 23:44 ` Woojung.Huh
2017-09-07 0:43 ` Andrew Lunn
2017-09-07 0:47 ` Andrew Lunn
2017-09-06 14:29 ` Vivien Didelot
2017-09-06 15:25 ` Vivien Didelot
2017-09-06 17:01 ` Andrew Lunn
2017-09-06 18:29 ` Vivien Didelot
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