Re: [net-next 02/15] i40e: Enable VF specific ethtool statistics via VF Port representor netdevs

On Wed, Sep 21, 2016 at 6:43 AM, Jeff Kirsher
[off-list ref] wrote:

From: Sridhar Samudrala <sridhar.samudrala@intel.com>

Sample script that shows ethtool stats on VF representor netdev
PF: enp5s0f0, VF0: enp5s2  VF_REP0: enp5s0f0-vf0

   # echo 2 > /sys/class/net/enp5s0f0/device/sriov_numvfs
   # ip link set enp5s2 up
   # ethtool -S enp5s0f0-vf0
   NIC statistics:
     tx_bytes: 0
     tx_unicast: 0
     tx_multicast: 0
     tx_broadcast: 0
     tx_discards: 0
     tx_errors: 0
     rx_bytes: 140
     rx_unicast: 0
     rx_multicast: 2
     rx_broadcast: 0
     rx_discards: 0
     rx_unknown_protocol: 0

Now, when the SW stats are finally upstream for 4.9 in net-next, the
correct approach
for the VF reps counters is to follow the architecture presented there
[1] -- and this is
for the netlink based standard counters. Once you do that, there's no
need to expose
the VF HW counters through  ethtool of the VF rep.

Or.


[1] offloaded stats commits
a5ea31f Merge branch 'net-offloaded-stats'
fc1bbb0 mlxsw: spectrum: Implement offload stats ndo and expose HW
stats by default
69ae6ad net: core: Add offload stats to if_stats_msg
2c9d85d netdevice: Add offload statistics ndo