Hi All, iavf and ice seem to report ol_flags for inner checksum even when not configured to do so. This results in packet with good outer/wrong inner ip checksums having flag RTE_MBUF_F_RX_IP_CKSUM_BAD And packet with wrong outer/good inner checksums having both RTE_MBUF_F_RX_IP_CKSUM_GOOD and RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD >From what I understand in the documentation, RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD should only be set when RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM is set on the port.
Test results below. Am I missing something ? testpmd is started this way: $dpdk-testpmd -l 0-2 -a <nic1> -a <nic2> -- -i testpmd>port stop all testpmd>port config 1 rx_offload ipv4_cksum on testpmd>port config 0 rx_offload ipv4_cksum on testpmd>port start all testpmd>set log global 10 testpmd>set verbose 1 testpmd>start Sent packet are built this way in scapy : a = IP(dst="10.200.0.1",src="10.100.0.1",proto=4)/IP(dst="10.125.0.1",src="10.125.0.2")/ICMP() b = IP(dst="10.200.0.1",src="10.100.0.1",proto=4,chksum=0xAAAA)/IP(dst="10.125.0.1",src="10.125.0.2")/ICMP() c = IP(dst="10.200.0.1",src="10.100.0.1",proto=4)/IP(dst="10.125.0.1",src="10.125.0.2",chksum=0xAAAA)/ICMP() Here are the results by pmd: ice_version=1.7.16 iavf_version=4.3.19 ddp_version=1.3.30.0 dpdk_version=21.11 #test on e810vf iavf testpmd> show port summary 0 Number of available ports: 2 Port MAC Address Name Driver Status Link 0 40:A6:B7:19:00:32 0000:00:04.0 net_iavf up 100 Gbps testpmd> show port 0 rx_offload configuration Rx Offloading Configuration of port 0 : Port : IPV4_CKSUM Queue[ 0] : IPV4_CKSUM # packet a port 0/queue 0: received 1 packets src=24:8A:07:A3:E3:34 - dst=FF:FF:FF:FF:FF:FF - type=0x0800 - length=62 - nb_segs=1 - hw ptype: L2_ETHER L3_IPV4_EXT_UNKNOWN TUNNEL_IP INNER_L3_IPV4_EXT_UNKNOWN INNER_L4_ICMP - sw ptype: L2_ETHER L3_IPV4 TUNNEL_IP INNER_L3_IPV4 - l2_len=14 - l3_len=20 - tunnel_len=0 - inner_l3_len=20 - Receive queue=0x0 ol_flags: RTE_MBUF_F_RX_L4_CKSUM_GOOD RTE_MBUF_F_RX_IP_CKSUM_GOOD RTE_MBUF_F_RX_OUTER_L4_CKSUM_UNKNOWN # packet b port 0/queue 0: received 1 packets src=24:8A:07:A3:E3:34 - dst=FF:FF:FF:FF:FF:FF - type=0x0800 - length=62 - nb_segs=1 - hw ptype: L2_ETHER L3_IPV4_EXT_UNKNOWN TUNNEL_IP INNER_L3_IPV4_EXT_UNKNOWN INNER_L4_ICMP - sw ptype: L2_ETHER L3_IPV4 TUNNEL_IP INNER_L3_IPV4 - l2_len=14 - l3_len=20 - tunnel_len=0 - inner_l3_len=20 - Receive queue=0x0 ol_flags: RTE_MBUF_F_RX_L4_CKSUM_GOOD RTE_MBUF_F_RX_IP_CKSUM_GOOD RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD RTE_MBUF_F_RX_OUTER_L4_CKSUM_UNKNOWN # packet c port 0/queue 0: received 1 packets src=24:8A:07:A3:E3:34 - dst=FF:FF:FF:FF:FF:FF - type=0x0800 - length=62 - nb_segs=1 - hw ptype: L2_ETHER L3_IPV4_EXT_UNKNOWN TUNNEL_IP INNER_L3_IPV4_EXT_UNKNOWN INNER_L4_ICMP - sw ptype: L2_ETHER L3_IPV4 TUNNEL_IP INNER_L3_IPV4 - l2_len=14 - l3_len=20 - tunnel_len=0 - inner_l3_len=20 - Receive queue=0x0 ol_flags: RTE_MBUF_F_RX_L4_CKSUM_GOOD RTE_MBUF_F_RX_IP_CKSUM_BAD RTE_MBUF_F_RX_OUTER_L4_CKSUM_UNKNOWN #test on e810 ice testpmd> show port summary 0 Number of available ports: 2 Port MAC Address Name Driver Status Link 0 40:A6:B7:19:04:60 0000:b3:00.0 net_ice up 100 Gbps testpmd> show port 0 rx_offload configuration Rx Offloading Configuration of port 0 : Port : IPV4_CKSUM Queue[ 0] : IPV4_CKSUM # packet a port 0/queue 0: received 1 packets src=24:8A:07:A3:E3:34 - dst=FF:FF:FF:FF:FF:FF - type=0x0800 - length=62 - nb_segs=1 - hw ptype: L2_ETHER L3_IPV4_EXT_UNKNOWN TUNNEL_IP INNER_L3_IPV4_EXT_UNKNOWN INNER_L4_ICMP - sw ptype: L2_ETHER L3_IPV4 TUNNEL_IP INNER_L3_IPV4 - l2_len=14 - l3_len=20 - tunnel_len=0 - inner_l3_len=20 - Receive queue=0x0 ol_flags: RTE_MBUF_F_RX_L4_CKSUM_GOOD RTE_MBUF_F_RX_IP_CKSUM_GOOD RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD # packet b port 0/queue 0: received 1 packets src=24:8A:07:A3:E3:34 - dst=FF:FF:FF:FF:FF:FF - type=0x0800 - length=62 - nb_segs=1 - hw ptype: L2_ETHER L3_IPV4_EXT_UNKNOWN TUNNEL_IP INNER_L3_IPV4_EXT_UNKNOWN INNER_L4_ICMP - sw ptype: L2_ETHER L3_IPV4 TUNNEL_IP INNER_L3_IPV4 - l2_len=14 - l3_len=20 - tunnel_len=0 - inner_l3_len=20 - Receive queue=0x0 ol_flags: RTE_MBUF_F_RX_L4_CKSUM_GOOD RTE_MBUF_F_RX_IP_CKSUM_GOOD RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD # packet c testpmd> port 0/queue 0: received 1 packets src=24:8A:07:A3:E3:34 - dst=FF:FF:FF:FF:FF:FF - type=0x0800 - length=62 - nb_segs=1 - hw ptype: L2_ETHER L3_IPV4_EXT_UNKNOWN TUNNEL_IP INNER_L3_IPV4_EXT_UNKNOWN INNER_L4_ICMP - sw ptype: L2_ETHER L3_IPV4 TUNNEL_IP INNER_L3_IPV4 - l2_len=14 - l3_len=20 - tunnel_len=0 - inner_l3_len=20 - Receive queue=0x0 ol_flags: RTE_MBUF_F_RX_L4_CKSUM_GOOD RTE_MBUF_F_RX_IP_CKSUM_BAD RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD #test on niantic ixgbe testpmd> show port summary 0 Number of available ports: 2 Port MAC Address Name Driver Status Link 0 00:09:C0:2B:0F:4C 0000:00:04.0 net_ixgbe_vf up 10 Gbps testpmd> show port 0 rx_offload configuration Rx Offloading Configuration of port 0 : Port : IPV4_CKSUM Queue[ 0] : IPV4_CKSUM # packet a port 0/queue 0: received 1 packets src=90:E2:BA:29:E1:24 - dst=FF:FF:FF:FF:FF:FF - type=0x0800 - length=62 - nb_segs=1 - RSS hash=0xaf7a05b - RSS queue=0x0 - hw ptype: L2_ETHER L3_IPV4 - sw ptype: L2_ETHER L3_IPV4 TUNNEL_IP INNER_L3_IPV4 - l2_len=14 - l3_len=20 - tunnel_len=0 - inner_l3_len=20 - Receive queue=0x0 ol_flags: RTE_MBUF_F_RX_RSS_HASH RTE_MBUF_F_RX_L4_CKSUM_GOOD RTE_MBUF_F_RX_IP_CKSUM_GOOD RTE_MBUF_F_RX_OUTER_L4_CKSUM_UNKNOWN # packet b port 0/queue 0: received 1 packets src=90:E2:BA:29:E1:24 - dst=FF:FF:FF:FF:FF:FF - type=0x0800 - length=62 - nb_segs=1 - RSS hash=0xaf7a05b - RSS queue=0x0 - hw ptype: L2_ETHER L3_IPV4 - sw ptype: L2_ETHER L3_IPV4 TUNNEL_IP INNER_L3_IPV4 - l2_len=14 - l3_len=20 - tunnel_len=0 - inner_l3_len=20 - Receive queue=0x0 ol_flags: RTE_MBUF_F_RX_RSS_HASH RTE_MBUF_F_RX_L4_CKSUM_GOOD RTE_MBUF_F_RX_IP_CKSUM_BAD RTE_MBUF_F_RX_OUTER_L4_CKSUM_UNKNOWN # packet c port 0/queue 0: received 1 packets src=90:E2:BA:29:E1:24 - dst=FF:FF:FF:FF:FF:FF - type=0x0800 - length=62 - nb_segs=1 - RSS hash=0xaf7a05b - RSS queue=0x0 - hw ptype: L2_ETHER L3_IPV4 - sw ptype: L2_ETHER L3_IPV4 TUNNEL_IP INNER_L3_IPV4 - l2_len=14 - l3_len=20 - tunnel_len=0 - inner_l3_len=20 - Receive queue=0x0 ol_flags: RTE_MBUF_F_RX_RSS_HASH RTE_MBUF_F_RX_L4_CKSUM_GOOD RTE_MBUF_F_RX_IP_CKSUM_GOOD RTE_MBUF_F_RX_OUTER_L4_CKSUM_UNKNOWN Let me know if you need any more information, Sincerely, -- Tsakiris Thomas
