Hi Xuekun, I suspect you are using a Linux kernel >= 5.9. There was an ABI change between 5.8 and 5.9, the issue is discussed here: https://lore.kernel.org/bpf/byapr11mb365382c5db1e5fcc53242609c1...@byapr11mb3653.namprd11.prod.outlook.com/ I'd recommend using a Linux kernel between 5.6 and 5.9 for now until those issues are resolved.
Best ben > -----Original Message----- > From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Xuekun > Sent: jeudi 13 mai 2021 15:17 > To: vpp-dev@lists.fd.io > Subject: [vpp-dev] AF_XDP usage help in VPP21.01 > > Hi, All > > > > I used VPP21.01 and AF_XDP on a physical nic. > > I followed the guide in > https://docs.fd.io/vpp/21.01/d8/d44/af_xdp_doc.html > <https://docs.fd.io/vpp/21.01/d8/d44/af_xdp_doc.html> that > > 1. ip link set dev <iface> promisc on > 2. vppctl create int af_xdp host-if ... // load the default > one, which I think should forward all received packets from kernel to VPP > 3. vppctl set int mac address <iface> <mac> // set to the NIC MAC. > 4. vppctl set int ip addr ... > > > > However "vppctl ping" still failed with "l3 mac mismatch". > > > > vpp# show errors > > Count Node Reason > Severity > > 20 ip4-glean ARP requests sent > error > > 20 enp9s0f0/0-tx sendto required > error > > 82 ethernet-input l3 mac mismatch > error > > From the remote ping target machine, tcpdump did show receiving the arp > request and sending the arp reply with the correct dmac. > > > > However in VPP, "trace add af_xdp-input 10", and "show trace" > > Packet 1 > > > > 00:14:16:539735: af_xdp-input > > af_xdp: enp9s0f0/0 (2) next-node ethernet-input > > 00:14:16:539744: ethernet-input > > frame: flags 0x1, hw-if-index 2, sw-if-index 2 > > 0x0000: 00:00:00:00:00:00 -> 00:00:00:00:00:00 > > 00:14:16:539748: error-punt > > rx:enp9s0f0/0 > > 00:14:16:539750: punt > > ethernet-input: l3 mac mismatch > > > > Does anyone have any ideas? > > Many thanks. > > > > Thx, Xuekun > >
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