Hi Martin Yes, the statistics issue has been reported several times recently. We will check the issue and try to fix it or get a workaround soon. Thank you very much!
Regards, Helin > -----Original Message----- > From: Martin Weiser [mailto:martin.weiser at allegro-packets.com] > Sent: Wednesday, September 9, 2015 7:58 PM > To: Zhang, Helin > Cc: dev at dpdk.org > Subject: i40e: problem with rx packet drops not accounted in statistics > > Hi Helin, > > in one of our test setups involving i40e adapters we are experiencing packet > drops which are not reflected in the interfaces statistics. > The call to rte_eth_stats_get suggests that all packets were properly received > but the total number of packets received through rte_eth_rx_burst is less than > the ipackets counter. > When for example running the l2fwd application (l2fwd -c 0xfe -n 4 -- -p > 0x3) and having driver debug messages enabled the following output is > generated for the interface in question: > > ... > PMD: i40e_update_vsi_stats(): ***************** VSI[6] stats start > ******************* > PMD: i40e_update_vsi_stats(): rx_bytes: 242624340000 > PMD: i40e_update_vsi_stats(): rx_unicast: 167790000 > PMD: i40e_update_vsi_stats(): rx_multicast: 0 > PMD: i40e_update_vsi_stats(): rx_broadcast: 0 > PMD: i40e_update_vsi_stats(): rx_discards: 1192557 > PMD: i40e_update_vsi_stats(): rx_unknown_protocol: 0 > PMD: i40e_update_vsi_stats(): tx_bytes: 0 > PMD: i40e_update_vsi_stats(): tx_unicast: 0 > PMD: i40e_update_vsi_stats(): tx_multicast: 0 > PMD: i40e_update_vsi_stats(): tx_broadcast: 0 > PMD: i40e_update_vsi_stats(): tx_discards: 0 > PMD: i40e_update_vsi_stats(): tx_errors: 0 > PMD: i40e_update_vsi_stats(): ***************** VSI[6] stats end > ******************* > PMD: i40e_dev_stats_get(): ***************** PF stats start > ******************* > PMD: i40e_dev_stats_get(): rx_bytes: 242624340000 > PMD: i40e_dev_stats_get(): rx_unicast: 167790000 > PMD: i40e_dev_stats_get(): rx_multicast: 0 > PMD: i40e_dev_stats_get(): rx_broadcast: 0 > PMD: i40e_dev_stats_get(): rx_discards: 0 > PMD: i40e_dev_stats_get(): rx_unknown_protocol: 167790000 > PMD: i40e_dev_stats_get(): tx_bytes: 0 > PMD: i40e_dev_stats_get(): tx_unicast: 0 > PMD: i40e_dev_stats_get(): tx_multicast: 0 > PMD: i40e_dev_stats_get(): tx_broadcast: 0 > PMD: i40e_dev_stats_get(): tx_discards: 0 > PMD: i40e_dev_stats_get(): tx_errors: 0 > PMD: i40e_dev_stats_get(): tx_dropped_link_down: 0 > PMD: i40e_dev_stats_get(): crc_errors: 0 > PMD: i40e_dev_stats_get(): illegal_bytes: 0 > PMD: i40e_dev_stats_get(): error_bytes: 0 > PMD: i40e_dev_stats_get(): mac_local_faults: 1 > PMD: i40e_dev_stats_get(): mac_remote_faults: 1 > PMD: i40e_dev_stats_get(): rx_length_errors: 0 > PMD: i40e_dev_stats_get(): link_xon_rx: 0 > PMD: i40e_dev_stats_get(): link_xoff_rx: 0 > PMD: i40e_dev_stats_get(): priority_xon_rx[0]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_rx[0]: 0 > PMD: i40e_dev_stats_get(): priority_xon_rx[1]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_rx[1]: 0 > PMD: i40e_dev_stats_get(): priority_xon_rx[2]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_rx[2]: 0 > PMD: i40e_dev_stats_get(): priority_xon_rx[3]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_rx[3]: 0 > PMD: i40e_dev_stats_get(): priority_xon_rx[4]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_rx[4]: 0 > PMD: i40e_dev_stats_get(): priority_xon_rx[5]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_rx[5]: 0 > PMD: i40e_dev_stats_get(): priority_xon_rx[6]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_rx[6]: 0 > PMD: i40e_dev_stats_get(): priority_xon_rx[7]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_rx[7]: 0 > PMD: i40e_dev_stats_get(): link_xon_tx: 0 > PMD: i40e_dev_stats_get(): link_xoff_tx: 0 > PMD: i40e_dev_stats_get(): priority_xon_tx[0]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_tx[0]: 0 > PMD: i40e_dev_stats_get(): priority_xon_2_xoff[0]: 0 > PMD: i40e_dev_stats_get(): priority_xon_tx[1]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_tx[1]: 0 > PMD: i40e_dev_stats_get(): priority_xon_2_xoff[1]: 0 > PMD: i40e_dev_stats_get(): priority_xon_tx[2]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_tx[2]: 0 > PMD: i40e_dev_stats_get(): priority_xon_2_xoff[2]: 0 > PMD: i40e_dev_stats_get(): priority_xon_tx[3]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_tx[3]: 0 > PMD: i40e_dev_stats_get(): priority_xon_2_xoff[3]: 0 > PMD: i40e_dev_stats_get(): priority_xon_tx[4]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_tx[4]: 0 > PMD: i40e_dev_stats_get(): priority_xon_2_xoff[4]: 0 > PMD: i40e_dev_stats_get(): priority_xon_tx[5]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_tx[5]: 0 > PMD: i40e_dev_stats_get(): priority_xon_2_xoff[5]: 0 > PMD: i40e_dev_stats_get(): priority_xon_tx[6]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_tx[6]: 0 > PMD: i40e_dev_stats_get(): priority_xon_2_xoff[6]: 0 > PMD: i40e_dev_stats_get(): priority_xon_tx[7]: 0 > PMD: i40e_dev_stats_get(): priority_xoff_tx[7]: 0 > PMD: i40e_dev_stats_get(): priority_xon_2_xoff[7]: 0 > PMD: i40e_dev_stats_get(): rx_size_64: 0 > PMD: i40e_dev_stats_get(): rx_size_127: 0 > PMD: i40e_dev_stats_get(): rx_size_255: 0 > PMD: i40e_dev_stats_get(): rx_size_511: 0 > PMD: i40e_dev_stats_get(): rx_size_1023: 0 > PMD: i40e_dev_stats_get(): rx_size_1522: 167790000 > PMD: i40e_dev_stats_get(): rx_size_big: 0 > PMD: i40e_dev_stats_get(): rx_undersize: 0 > PMD: i40e_dev_stats_get(): rx_fragments: 0 > PMD: i40e_dev_stats_get(): rx_oversize: 0 > PMD: i40e_dev_stats_get(): rx_jabber: 0 > PMD: i40e_dev_stats_get(): tx_size_64: 0 > PMD: i40e_dev_stats_get(): tx_size_127: 0 > PMD: i40e_dev_stats_get(): tx_size_255: 0 > PMD: i40e_dev_stats_get(): tx_size_511: 0 > PMD: i40e_dev_stats_get(): tx_size_1023: 0 > PMD: i40e_dev_stats_get(): tx_size_1522: 0 > PMD: i40e_dev_stats_get(): tx_size_big: 0 > PMD: i40e_dev_stats_get(): mac_short_packet_dropped: 0 > PMD: i40e_dev_stats_get(): checksum_error: 0 > PMD: i40e_dev_stats_get(): fdir_match: 0 > PMD: i40e_dev_stats_get(): ***************** PF stats end > ******************** > ... > > The count for rx_unicast is exactly the number of packets we would have > expected and the count for rx_discards in the VSI stats is exactly the number > of > packets we are missing. > The question is why this number shows up only in the VSI stats and not in the > PF > stats and of course why the packets which were obviously discarded are still > counted in the rx_unicast stats. > This test was performed using DPDK 2.1 and the firmware of the XL710 is the > latest one (FW 4.40 API 1.4 NVM 04.05.03). > Do you have an idea what might be going on? > > Best regards, > Martin > >
