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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt'>Hi,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>We found a strange behavior of the E810 VLAN offload.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>We are running DPDK 24.11.2 with ice driver 1.15.4, firmware 4.60 and COMMS DDP 1.3.46<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>The NIC receives an IPv4/UDP packet inside VLAN 300.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>If we run dpdk-testpmd with a single queue, everything seems fine:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Courier New"'>dpdk-testpmd -a 0000:4b:00.0 -c ffffff -n 8 -- -i<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Courier New"'>set verbose 5<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Courier New"'>port stop 0<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Courier New"'>port config 0 rx_offload vlan_strip on<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Courier New"'>port start 0<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Courier New"'>start<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>And the packet is correctly displayed:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'> src=08:02:03:04:05:06 - dst=00:1A:CA:01:00:96 - pool=mb_pool_0 - type=0x0800 - length=142 - nb_segs=1 - VLAN tci=0x12c - hw ptype: L2_ETHER L3_IPV4_EXT_UNKNOWN L4_UDP - sw ptype: L2_ETHER L3_IPV4 L4_UDP - l2_len=14 - l3_len=20 - l4_len=8 - Destination UDP port=5398 - Receive queue=0x0<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'> ol_flags: <span style='background:yellow;mso-highlight:yellow'>RTE_MBUF_F_RX_VLAN</span> RTE_MBUF_F_RX_L4_CKSUM_GOOD RTE_MBUF_F_RX_IP_CKSUM_GOOD <span style='background:yellow;mso-highlight:yellow'>RTE_MBUF_F_RX_VLAN_STRIPPED</span> RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>But if we use a different number of queues:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Courier New"'>dpdk-testpmd -a 0000:4b:00.0 -c ffffff -n 8 -- -i <span style='background:yellow;mso-highlight:yellow'>--rxq=4 --txq=4</span><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>The VLAN is in fact removed, but there is no evidence of that:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Courier New"'> src=08:02:03:04:05:06 - dst=00:1A:CA:01:00:96 - pool=mb_pool_0 - type=0x0800 - length=142 - nb_segs=1 - RSS hash=0xfae3080 - RSS queue=0x0 - hw ptype: L2_ETHER L3_IPV4_EXT_UNKNOWN L4_UDP - sw ptype: L2_ETHER L3_IPV4 L4_UDP - l2_len=14 - l3_len=20 - l4_len=8 - Destination UDP port=5398 - Receive queue=0x0<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Courier New"'> 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_GOOD<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>There was a bug in some previous versions of DPDK about E810 and VLAN offload, but it was fixed.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Are we doing something wrong or is there a problem with the driver?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Thank you<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'> Ernesto<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p></div></body></html>