On 9/20/2016 9:22 PM, Or Gerlitz wrote:
On Wed, Sep 21, 2016 at 6:43 AM, Jeff Kirsher
<jeffrey.t.kirs...@intel.com> wrote:
From: Sridhar Samudrala <sridhar.samudr...@intel.com>
This patch enables creation of a VF Port representor/Control netdev
associated with each VF. These netdevs can be used to control and configure
VFs from PFs namespace. They enable exposing VF statistics, configuring
link state, mtu, fdb/vlan entries etc.
What happens if someone does a xmit on the VF representor, does the
packet show up @ the VF?
and what happens of the VF xmits and there's no HW steering rule that
matches this, does
the frame show up @ the VF rep on the host?
TX/RX are not yet supported via VFPR netdevs in this patch series.
Will be submitting this support in the next patchset.
In other words, can these VF reps serve for setting up host SW based
switching which you
can later offload (through TC, bridge, netfilter, etc)?
Yes. These offloads will be possible via VFPRs.
I am posing these questions because in downstream patch you are adding
devlink support
for set/get the e-switch mode and you declare the default mode to be switchdev.
When the switchdev mode was introduced in 4.8 these RX/TX
characteristics were defined
to be an essential (== requirement) part for a driver to support that mode.
The current patchset introduces the basic VFPR support starting with
exposing VF stats and
syncing link state between VFs and VFPRs.
We decided to declare the default mode to be switchdev so that the new
code paths will get
exercised by default during normal testing.
Or
# echo 2 > /sys/class/net/enp5s0f0/device/sriov_numvfs
# ip l show
297: enp5s0f0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop portid
6805ca2e7268 state DOWN mode DEFAULT group default qlen 1000
link/ether 68:05:ca:2e:72:68 brd ff:ff:ff:ff:ff:ff
vf 0 MAC 00:00:00:00:00:00, spoof checking on, link-state auto, trust off
vf 1 MAC 00:00:00:00:00:00, spoof checking on, link-state auto, trust off
299: enp5s0f0-vf0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
mode DEFAULT group default qlen 1000
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
300: enp5s0f0-vf1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
mode DEFAULT group default qlen 1000
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
