Hi Jerome, Neale, Ole We were debugging issue regarding IPV6 ping failure between Linux_host_interface-->vpp_SRIOV_VF_interface and also between vpp_SRIOV_VF_interface <---> vpp_SRIOV_VPP_interface. While debugging we found that src interface is sending "Neighbour Solicitation" with correct destination multicast IP and mac addresses. SRIOV PF is receiving "Neighbour Solicitation" message but not forwarding it to VPP VF.
To make it work, we explicitly set multicast mac address 33:33:ff:IPv6_byte[2]:IPv6_byte[1]:IPv6_byte[0] on VPP VF interface , using dpdk API rte_eth_dev_set_mc_addr_list during IP assignment and IPV6 ping start working. We want to confirm two points: 1) Do we need to explicitly assign multicast mac address in case of IPV6 in VPP?, if yes do we need to raise bug on VPP and provide patch for fix. 2) Are we missing some configuration in VPP which might not need above hack. Versions: Kernel version: 3.10.0 VPP version: vpp-20.01 Regards, Satish Singh From: Lokesh Chimbili Sent: 26 February 2020 15:48 To: Jerome Tollet (jtollet) <jtol...@cisco.com> Cc: Krishnamoney Elayathu <kelaya...@altiostar.com>; Mrityunjaya Kumar Altran <kmrityunj...@altiostar.com>; Neale Ranns (nranns) <nra...@cisco.com>; Damjan Marion (damarion) <damar...@cisco.com>; Prasad Hiremath <phirem...@altiostar.com>; Venkatarao M <venkatar...@altiostar.com>; praveenkumar A S <pkuma...@altiostar.com>; Venkatesh Narayanaswamy <nve...@altiostar.com>; Ole Troan (otroan) <otr...@cisco.com>; Mahesh Sivapuram <msivapu...@altiostar.com>; Prashanth Bhaskar <pbhas...@altiostar.com>; Basawaraj E N <bnadaga...@altiostar.com>; Satish Singh <ssi...@altiostar.com> Subject: RE: Unable to ping VPP interface when using SRIOV VF Hi Jerome, Neale, Ole, On running “pcap trace tx intfc vpp_eth1” on the VPP interface, we see that “Multicast Listener Report Message” messages are not sent whenever we add/remove an IPv6 address on the VPP interface using SRIOV VF. Aren’t these messages expected to be sent? I see them getting sent whenever I add/remove an IPv6 address on a linux interface. I tried subscribing to vpp-dev mailing list. I’m not receiving any confirmation email, even though I sent an email with the subject “I Use Exchange And I'm Not Receiving Group Emails” to supp...@groups.io<mailto:supp...@groups.io> I’ll repost as soon as the subscription is complete, meanwhile can you please take a look at this issue and suggest. Please find the VPP startup.conf attached. Please let me know if I need to share any additional information/logs. VPP version: vpp-20.01 VPP start: vpp -c startup.conf vppctl commands executed: set interface state vpp_eth1 up set interface ip address vpp_eth1 fd02:298c:8dfe:0402:0000:0000:0000:126b/124 i40e driver version: [root@n4bng1 ~]# ethtool -i sriov0 driver: i40e version: 2.8.10-k firmware-version: 4.00 0x800014f3 1.2228.0 expansion-rom-version: bus-info: 0000:67:00.1 supports-statistics: yes supports-test: yes supports-eeprom-access: yes supports-register-dump: yes supports-priv-flags: yes NIC Hardware: 67:00.1 Ethernet controller: Intel Corporation Ethernet Connection X722 for 10GbE SFP+ (rev 09) OS version: CentOS Linux release 7.7.1908 (Core) Kernel version: 3.10.0-1062.el7.x86_64 Thanks and Regards, Lokesh.C From: Jerome Tollet (jtollet) [mailto:jtol...@cisco.com] Sent: 25 February 2020 23:46 To: Lokesh Chimbili Cc: Krishnamoney Elayathu; Mrityunjaya Kumar Altran; Neale Ranns (nranns); Damjan Marion (damarion); Prasad Hiremath; Venkatarao M; praveenkumar A S; Venkatesh Narayanaswamy; Ole Troan (otroan); Mahesh Sivapuram; Prashanth Bhaskar; Basawaraj E N; Satish Singh Subject: Re: Unable to ping VPP interface when using SRIOV VF Hi Lokesh, May I ask you to repost this question on public mailing list? Other persons in the future may have similar issue 😉 Jerome De : Lokesh Chimbili <lchimb...@altiostar.com<mailto:lchimb...@altiostar.com>> Date : mardi 25 février 2020 à 18:55 À : Jerome Tollet <jtol...@cisco.com<mailto:jtol...@cisco.com>> Cc : Krishnamoney Elayathu <kelaya...@altiostar.com<mailto:kelaya...@altiostar.com>>, Mrityunjaya Kumar Altran <kmrityunj...@altiostar.com<mailto:kmrityunj...@altiostar.com>>, "Neale Ranns (nranns)" <nra...@cisco.com<mailto:nra...@cisco.com>>, Damjan Marion <damar...@cisco.com<mailto:damar...@cisco.com>>, Prasad Hiremath <phirem...@altiostar.com<mailto:phirem...@altiostar.com>>, Venkatarao M <venkatar...@altiostar.com<mailto:venkatar...@altiostar.com>>, praveenkumar A S <pkuma...@altiostar.com<mailto:pkuma...@altiostar.com>>, Venkatesh Narayanaswamy <nve...@altiostar.com<mailto:nve...@altiostar.com>>, Ole Troan <otr...@cisco.com<mailto:otr...@cisco.com>>, Mahesh Sivapuram <msivapu...@altiostar.com<mailto:msivapu...@altiostar.com>>, Prashanth Bhaskar <pbhas...@altiostar.com<mailto:pbhas...@altiostar.com>>, Basawaraj E N <bnadaga...@altiostar.com<mailto:bnadaga...@altiostar.com>>, Satish Singh <ssi...@altiostar.com<mailto:ssi...@altiostar.com>> Objet : Unable to ping VPP interface when using SRIOV VF Hi Jerome, When we use VPP with SRIOV VF we are unable to ping the static IPv6 address assigned to the VPP interface. We tried ping from another SRIOV VF interface bound to the linux driver(iavf/i40e) and having a static IPv6 address in the same subnet as shown in the figures below, In both cases we don’t see the IPv6 Neighbour Solicit message reaching the VPP interface. [cid:image001.png@01D5F7A3.2593A2A0] Figure (a) [cid:image002.png@01D5F7A3.2593A2A0] Figure (b) However we are able to ping from VPP interface to external IPv6 addresses in the same subnet. We don’t see this issue with IPv4 addresses. The VF setting as shown in “ip link show <PF interface>” is as follows, spoof checking on, link-state auto, trust off Please find the packet captures taken on the VPP interface attached. The case which is not working is captured in “ipv6_ping_from_linux_iavf_to_vpp_not_working.pcap” Could you please suggest if we are missing some VPP configuration step due to which the VPP interface is not receiving any IPv6 Neighbour Solicit messages. Thanks and Regards, Lokesh.C
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