Solarflare Solarflare XtremeScale series, User Manual, Page: 132 / 400

Solarflare Server Adapter User Guide
Solarflare Adapters on Linux
Issue 20 © Solarflare Communications 2017 125
3.28 Linux ethtool Statistics
The Linux command
ethtool
will display an extensive range of statistics originated
from the MAC on the Solarflare network adapter. To display statistics use the
following command:
ethtool ‐ S ethX
(where X is the ID of the Solarflare interface)
Using a Solarflare net driver earlier than version 4.4.1.1017, the ethtool statistics
counters can be reset by reloading the sfc driver:
# modprobe ‐ r sfc
# modprobe sfc
Drivers from version 4.4.1.1017 (included in onload ‐ 201502) have to manage multi ‐
PF configurations and for this reason statistics are not reset by reloading the driver.
The only methods currently available to reset stats is to cold ‐ reboot (power OFF/
ON) the server or reload the firmware image.
Per port statistics (
port_
) are from the physical adapter port. Other statistics are
from the specified PCIe function.
Table 28 below lists the complete output from the
ethtool ‐ S
command.
NOTE:
ethtool ‐ S
output depends on the features supported by the adapter type
rss_numa_local Constrain RSS to use CPU cores on the NUMA
node local the Solarflare adapter.
Set to 1 to restrict, 0 otherwise.
0|1 1
max_vfs Enable VFs in the net driver.
When specified as a single integer the VF count
will be applied to all PFs.
When specified as a comma separated list, the
first VF count is assigned to the PF with the
lowest index i.e. the lowest MAC address, then
the PF with the next highest MAC address etc.
uint 0
1. Check OS documentation for availability on SUSE and RHEL versions.
Table 27: Driver Module Parameters
Parameter Description Possible
Value
Default
Value