[dpdk-users] Packets beyond MTU size in i40evf

[dpdk-users] Packets beyond MTU size in i40evf

[Varun Lakkur]

Hey,

I am using rte_eth_stats_get() to get the stats of how many packets
are received/transmitted by my application.
I am running SRIOV on XL710 (using i40evf pmd). When I send packets
beyond the MTU size, my application does not receive them as expected.

But these are not reported in rx_dropped_packets/rx_errors. I see that
these are counted as rx_good_packets. How do I differentiate the
oversized packets and count them correctly? Shouldn't they be counted
under rx_dropped_packets?

I went through the source code for i40e_dev_stats_get and
i40evf_dev_stats_get. I see that i40e reads extra counters from
i40e_hw_port_stats. Is there anything similar for SRIOV interfaces?

Here is the xstats counters I got from dpdk-procinfo:

####################################################
NIC extended statistics for port 1
####################################################
rx_good_packets: 656
tx_good_packets: 556
rx_good_bytes: 225160
tx_good_bytes: 33360
rx_errors: 0
tx_errors: 0
rx_mbuf_allocation_errors: 0
rx_q0packets: 0
rx_q0bytes: 0
rx_q0errors: 0
tx_q0packets: 0
tx_q0bytes: 0
rx_bytes: 225160
rx_unicast_packets: 656
rx_multicast_packets: 0
rx_broadcast_packets: 0
rx_dropped_packets: 0
rx_unknown_protocol_packets: 0
tx_bytes: 33360
tx_unicast_packets: 556
tx_multicast_packets: 0
tx_broadcast_packets: 0
tx_dropped_packets: 0
tx_error_packets: 0

Regards,
Varun