Helin is still in Chinese New Year Vacation. Will the below command option help ?
4.5.9. port config - max-pkt-len Set the maximum packet length: testpmd> port config all max-pkt-len (value) This is equivalent to the --max-pkt-len command-line option. -----Original Message----- From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of Julien Meunier Sent: Tuesday, February 9, 2016 9:36 AM To: Zhang, Helin <helin.zhang at intel.com>; dev at dpdk.org Subject: [dpdk-dev] i40e: cannot change mtu to enable jumbo frame Hello Helin, I tried to send jumbo frames to a i40e card. However, I observed that all frames are dropped. Moreover, set_mtu function is not implemented on i40e PMD. > testpmd --log-level 8 --huge-dir=/mnt/huge -n 4 -l 2,18 --socket-mem 1024,1024 -w 0000:02:00.0 -w 0000:02:00.2 -- -i --nb-cores=1 --nb-ports=2 --total-num-mbufs=65536 ============= Configuration ============= +-----------+ +-------------+ | | | | | tgen | | | | +----------+ port 0 | | | | | | | | | | | | | | | | | | +----------+ port 1 | | | | | +-----------+ +-------------+ DPDK: DPDK-v2.2 ========== MTU = 1500 ========== Packet sent from a tgen > p = Ether / IP / UDP / Raw(MTU + HDR(Ethernet)- HDR(IP) - HDR(UDP)) > > len(p) = 1514 testpmd> start PMD: i40e_rxd_to_vlan_tci(): Mbuf vlan_tci: 0, vlan_tci_outer: 0 testpmd> stop Telling cores to stop... Waiting for lcores to finish... PMD: i40e_update_vsi_stats(): *** VSI[13] stats start *** PMD: i40e_update_vsi_stats(): rx_bytes: 1518 PMD: i40e_update_vsi_stats(): rx_unicast: 1 PMD: i40e_update_vsi_stats(): *** VSI[13] stats end *** PMD: i40e_dev_stats_get(): *** PF stats start *** PMD: i40e_dev_stats_get(): rx_bytes: 1514 PMD: i40e_dev_stats_get(): rx_unicast: 1 PMD: i40e_dev_stats_get(): rx_unknown_protocol: 1 PMD: i40e_dev_stats_get(): rx_size_1522: 1 PMD: i40e_dev_stats_get(): *** PF stats end *** -------------- Forward statistics for port 0 -------------- RX-packets: 1 RX-dropped: 0 RX-total: 1 TX-packets: 0 TX-dropped: 0 TX-total: 0 ---------------------------------------------------------------------------- PMD: i40e_update_vsi_stats(): *** VSI[14] stats start *** PMD: i40e_update_vsi_stats(): tx_bytes: 1514 PMD: i40e_update_vsi_stats(): tx_unicast: 1 PMD: i40e_update_vsi_stats(): *** VSI[14] stats end *** PMD: i40e_dev_stats_get(): *** PF stats start *** PMD: i40e_dev_stats_get(): tx_bytes: 1514 PMD: i40e_dev_stats_get(): tx_unicast: 1 PMD: i40e_dev_stats_get(): tx_size_1522: 1 PMD: i40e_dev_stats_get(): *** PF stats end *** -------------- Forward statistics for port 1 -------------- RX-packets: 0 RX-dropped: 0 RX-total: 0 TX-packets: 1 TX-dropped: 0 TX-total: 1 ---------------------------------------------------------------------------- +++++ Accumulated forward statistics for all ports+++++ RX-packets: 1 RX-dropped: 0 RX-total: 1 TX-packets: 1 TX-dropped: 0 TX-total: 1 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ => OK ========== MTU = 1600 ========== Packet sent > p = Ether / IP / UDP / Raw(MTU + HDR(Ethernet)- HDR(IP) - HDR(UDP)) > > len(p) = 1614 testpmd> port config mtu 0 1600 rte_eth_dev_set_mtu: Function not supported Set MTU failed. diag=-95 testpmd> port config mtu 1 1600 rte_eth_dev_set_mtu: Function not supported Set MTU failed. diag=-95 testpmd> start testpmd> stop Telling cores to stop... Waiting for lcores to finish... PMD: i40e_update_vsi_stats(): *** VSI[13] stats start *** PMD: i40e_update_vsi_stats(): rx_bytes: 1618 PMD: i40e_update_vsi_stats(): rx_unicast: 1 PMD: i40e_update_vsi_stats(): *** VSI[13] stats end *** PMD: i40e_dev_stats_get(): *** PF stats start *** PMD: i40e_dev_stats_get(): rx_bytes: 1614 PMD: i40e_dev_stats_get(): rx_unicast: 1 PMD: i40e_dev_stats_get(): rx_unknown_protocol: 1 PMD: i40e_dev_stats_get(): rx_size_big: 1 PMD: i40e_dev_stats_get(): *** PF stats end *** -------------- Forward statistics for port 0 -------------- RX-packets: 1 RX-dropped: 0 RX-total: 1 TX-packets: 0 TX-dropped: 0 TX-total: 0 ---------------------------------------------------------------------------- PMD: i40e_update_vsi_stats(): *** VSI[14] stats start *** PMD: i40e_update_vsi_stats(): tx_bytes: 0 PMD: i40e_update_vsi_stats(): tx_unicast: 0 PMD: i40e_update_vsi_stats(): *** VSI[14] stats end *** PMD: i40e_dev_stats_get(): *** PF stats start *** PMD: i40e_dev_stats_get(): tx_bytes: 0 PMD: i40e_dev_stats_get(): tx_unicast: 0 PMD: i40e_dev_stats_get(): tx_size_big: 0 PMD: i40e_dev_stats_get(): *** PF stats end *** -------------- Forward statistics for port 1 -------------- RX-packets: 0 RX-dropped: 0 RX-total: 0 TX-packets: 0 TX-dropped: 0 TX-total: 0 ---------------------------------------------------------------------------- +++++ Accumulated forward statistics for all ports+++++ RX-packets: 1 RX-dropped: 0 RX-total: 1 TX-packets: 0 TX-dropped: 0 TX-total: 0 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Done. => Frame correctly received on port 0, but never forwarded or xmit on port 1. Does a mtu_set function will be developed soon in order to support jumbo frame ? Regards, -- Julien MEUNIER 6WIND
