From: Andrew Lunn <andrew@lunn.ch>
To: David Ahern <dsahern@gmail.com>
Cc: Siwei Liu <loseweigh@gmail.com>, Jiri Pirko <jiri@resnulli.us>,
Si-Wei Liu <si-wei.liu@oracle.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
Stephen Hemminger <stephen@networkplumber.org>,
Alexander Duyck <alexander.h.duyck@intel.com>,
David Miller <davem@davemloft.net>,
"Brandeburg, Jesse" <jesse.brandeburg@intel.com>,
Jakub Kicinski <kubakici@wp.pl>, Jason Wang <jasowang@redhat.com>,
"Samudrala, Sridhar" <sridhar.samudrala@intel.com>,
Netdev <netdev@vger.kernel.org>,
virtualization@lists.linux-foundation.org
Subject: Re: [RFC PATCH 2/3] netdev: kernel-only IFF_HIDDEN netdevice
Date: Wed, 4 Apr 2018 22:08:28 +0200 [thread overview]
Message-ID: <20180404200828.GA29717@lunn.ch> (raw)
In-Reply-To: <b0f5e27b-0be1-311e-f3f3-f79af5cd4521@gmail.com>
> Networking vendors have out of tree kernel modules. Those modules use a
> netdev (call it a master netdev, a control netdev, cpu port, whatever)
> to pull packets from the ASIC and deliver to virtual netdevices
> representing physical ports.
Sounds a lot like DSA. Please ask the vendor to contribute the drivers
:-)
> The master netdev should not be mucked with by a user. It should be
> ignored by certain s/w with lldpd as just an *example*.
I have come across occasional problems with the master device in DSA.
But nothing too serious. Generally the switch will just toss frames it
gets which don't have the needed header, when they come direct from
the master device, rather than via the slave devices.
Andrew
next prev parent reply other threads:[~2018-04-04 20:08 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-01 9:13 [RFC PATCH 0/3] Userspace compatible driver model for virtio_bypass Si-Wei Liu
2018-04-01 9:13 ` [RFC PATCH 1/3] qemu: virtio-bypass should explicitly bind to a passthrough device Si-Wei Liu
2018-04-03 12:25 ` Michael S. Tsirkin
2018-04-04 8:02 ` [virtio-dev] " Siwei Liu
2018-04-05 15:31 ` Paolo Bonzini
2018-04-07 2:54 ` Siwei Liu
2018-04-01 9:13 ` [RFC PATCH 2/3] netdev: kernel-only IFF_HIDDEN netdevice Si-Wei Liu
2018-04-01 16:11 ` David Ahern
2018-04-03 7:40 ` Siwei Liu
2018-04-03 14:57 ` David Ahern
2018-04-03 15:42 ` Jiri Pirko
2018-04-03 19:23 ` Siwei Liu
2018-04-04 1:04 ` David Ahern
2018-04-04 6:19 ` Jiri Pirko
2018-04-04 8:01 ` Siwei Liu
2018-04-04 7:36 ` Siwei Liu
2018-04-04 17:21 ` David Ahern
2018-04-04 17:37 ` David Miller
2018-04-04 18:20 ` Jiri Pirko
2018-04-07 2:32 ` Siwei Liu
2018-04-07 3:19 ` Andrew Lunn
2018-04-09 22:07 ` Siwei Liu
2018-04-09 22:15 ` Andrew Lunn
2018-04-09 22:30 ` Siwei Liu
2018-04-09 23:03 ` Stephen Hemminger
2018-04-09 23:31 ` Siwei Liu
2018-04-08 16:32 ` David Miller
2018-04-10 6:48 ` Siwei Liu
2018-04-18 0:26 ` Siwei Liu
2018-04-18 23:33 ` Samudrala, Sridhar
2018-04-19 4:41 ` Michael S. Tsirkin
2018-04-19 5:00 ` [virtio-dev] " Samudrala, Sridhar
2018-04-19 5:07 ` Michael S. Tsirkin
2018-04-19 6:10 ` [virtio-dev] " Samudrala, Sridhar
2018-04-19 6:43 ` Siwei Liu
2018-04-19 6:31 ` Siwei Liu
2018-04-04 18:02 ` Siwei Liu
2018-04-04 8:28 ` Siwei Liu
2018-04-04 17:37 ` David Ahern
2018-04-04 17:42 ` David Miller
2018-04-04 17:44 ` Stephen Hemminger
2018-04-04 20:08 ` Andrew Lunn [this message]
2018-04-03 17:35 ` Stephen Hemminger
[not found] ` <CADGSJ23vZdtQzWdc_6M_Hr4MUej--wgvJ785DwRF3VaPWS1rpA@mail.gmail.com>
[not found] ` <20180403160834.51594373@xeon-e3>
2018-04-06 21:29 ` Siwei Liu
2018-04-01 9:13 ` [RFC PATCH 3/3] virtio_net: make lower netdevs for virtio_bypass hidden Si-Wei Liu
2018-04-03 12:20 ` Michael S. Tsirkin
2018-04-04 8:03 ` [virtio-dev] " Siwei Liu
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