Update the guide with more details on the different statistics query possible with MLX5 PMD.
Signed-off-by: Shahaf Shuler <shah...@mellanox.com> --- doc/guides/nics/mlx5.rst | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst index f9558da89..154db64d7 100644 --- a/doc/guides/nics/mlx5.rst +++ b/doc/guides/nics/mlx5.rst @@ -105,8 +105,6 @@ Limitations ----------- - Inner RSS for VXLAN frames is not supported yet. -- Port statistics through software counters only. Flow statistics are - supported by hardware counters. - Hardware checksum RX offloads for VXLAN inner header are not supported yet. - Forked secondary process not supported. - Flow pattern without any specific vlan will match for vlan packets as well: @@ -134,6 +132,17 @@ Limitations to 0 are not supported. - VXLAN TSO and checksum offloads are not supported on VM. +Statistics +---------- + +MLX5 supports various of methods to report statistics: + +Port statistics can be queried using ``rte_eth_stats_get()``. The port statistics are through SW only and counts the number of packets received or sent successfully by the PMD. + +Extended statistics can be queried using ``rte_eth_xstats_get()``. The extended statistics expose a wider set of counters counted by the device. The extended port statistics counts the number of packets received or sent successfully by the port. As Mellanox NICs are using the :ref:`Bifurcated Linux Driver <linux_gsg_linux_drivers>` those counters counts also packet received or sent by the Linux kernel. The counters with ``_phy`` suffix counts the total events on the physical port, therefore not valid for VF. + +Finally per-flow statistics can by queried using ``rte_flow_query`` when attaching a count action for specific flow. The flow counter counts the number of packets received successfully by the port and match the specific flow. + Configuration ------------- -- 2.12.0
