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Bug 1702331

Summary: [OVN] Fragmentation support
Product: Red Hat Enterprise Linux Fast Datapath Reporter: Numan Siddique <nusiddiq>
Component: ovn2.11Assignee: Numan Siddique <nusiddiq>
Status: CLOSED ERRATA QA Contact: haidong li <haili>
Severity: medium Docs Contact:
Priority: medium    
Version: FDP 19.CCC: amuller, apevec, bcafarel, chrisw, ctrautma, dalvarez, djuran, dsneddon, ekuris, fhallal, haili, jishi, lhh, lmartins, majopela, pvauter, qding, rbryant, rhos-maint, rsafrono, tredaelli
Target Milestone: ---Keywords: FutureFeature, Triaged
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: ovn2.11-2.11.0-16.el8fdp Doc Type: Enhancement
Doc Text:
Story Points: ---
Clone Of: 1547074 Environment:
Last Closed: 2019-06-05 14:58:10 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1547074, 1553839, 1702564    
Bug Blocks: 1685634    

Comment 9 haidong li 2019-05-23 10:11:23 UTC 
This bug is verified on the latest version:
root@dell-per730-57 ~]# uname -a
Linux dell-per730-57.rhts.eng.pek2.redhat.com 4.18.0-83.el8.x86_64 #1 SMP Tue May 7 11:26:15 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
[root@dell-per730-57 ~]# rpm -qa | grep ovn
ovn2.11-2.11.0-16.el8fdp.x86_64
ovn2.11-host-2.11.0-16.el8fdp.x86_64
kernel-kernel-networking-openvswitch-ovn-1.0-121.noarch
ovn2.11-central-2.11.0-16.el8fdp.x86_64
[root@dell-per730-57 ~]# rpm -qa | grep openvswitch
openvswitch2.11-2.11.0-9.el8fdp.x86_64
openvswitch-selinux-extra-policy-1.0-11.el8fdp.noarch
kernel-kernel-networking-openvswitch-ovn-1.0-121.noarch
[root@dell-per730-57 ~]# 

[root@dell-per730-57 ~]# ovn-nbctl show
switch 1885fd1a-b9f5-4322-b450-d8605c45214d (s3)
    port hv0_vm01_vnet1
        addresses: ["00:de:ad:00:01:01 172.16.103.12"]
    port hv0_vm00_vnet1
        addresses: ["00:de:ad:00:00:01 172.16.103.11"]
    port s3_r1
        type: router
        addresses: ["00:de:ad:ff:01:03 172.16.103.1"]
        router-port: r1_s3
    port ln_port
        type: localnet
        addresses: ["unknown"]
switch 4a50cb0f-f2ab-4eee-8107-f984813dd1ae (s2)
    port hv1_vm01_vnet1
        addresses: ["00:de:ad:01:01:01 172.16.102.12"]
    port s2_r1
        type: router
        addresses: ["00:de:ad:ff:01:02 172.16.102.1"]
        router-port: r1_s2
    port hv1_vm00_vnet1
        addresses: ["00:de:ad:01:00:01 172.16.102.11"]
router 814c911c-1993-4e23-aaff-4c303bdf0b12 (r1)
    port r1_s2
        mac: "00:de:ad:ff:01:02"
        networks: ["172.16.102.1/24"]
    port r1_s3
        mac: "00:de:ad:ff:01:03"
        networks: ["172.16.103.1/24"]
[root@dell-per730-57 ~]# 
[root@dell-per730-57 ~]# ovn-sbctl show
Chassis "hv1"
    hostname: "dell-per730-57.rhts.eng.pek2.redhat.com"
    Encap geneve
        ip: "20.0.0.25"
        options: {csum="true"}
    Port_Binding "hv1_vm00_vnet1"
    Port_Binding "hv1_vm01_vnet1"
Chassis "hv0"
    hostname: "dell-per730-19.rhts.eng.pek2.redhat.com"
    Encap geneve
        ip: "20.0.0.26"
        options: {csum="true"}
    Port_Binding "cr-r1_s3"
    Port_Binding "hv0_vm00_vnet1"
    Port_Binding "hv0_vm01_vnet1"
[root@dell-per730-57 ~]# ovs-vsctl show
7c0585d9-1eec-460c-a329-ca2702de263c
    Bridge br-int
        fail_mode: secure
        Port "hv1_vm01_vnet1"
            Interface "hv1_vm01_vnet1"
        Port "hv1_vm00_vnet1"
            Interface "hv1_vm00_vnet1"
        Port "ovn-hv0-0"
            Interface "ovn-hv0-0"
                type: geneve
                options: {csum="true", key=flow, remote_ip="20.0.0.26"}
        Port br-int
            Interface br-int
                type: internal
    ovs_version: "2.11.0"
[root@dell-per730-57 ~]# 
[root@dell-per730-57 ~]# ovn-nbctl get logical_router_port r1_s3 options:gateway_mtu
"1500"
[root@dell-per730-57 ~]# 
[root@dell-per730-57 ~]# virsh list
 Id    Name                           State
----------------------------------------------------
 2     hv1_vm00                       running
 3     hv1_vm01                       running

[root@dell-per730-57 ~]# virsh console hv1_vm00
Connected to domain hv1_vm00
Escape character is ^]

[root@localhost ~]# 
root@localhost ~]# ping -s 5000 172.16.103.11
PING 172.16.103.11 (172.16.103.11) 5000(5028) bytes of data.
From 172.16.102.1 icmp_seq=1 Frag needed and DF set (mtu = 1482)
5008 bytes from 172.16.103.11: icmp_seq=2 ttl=63 time=1.46 ms
5008 bytes from 172.16.103.11: icmp_seq=3 ttl=63 time=0.694 ms
5008 bytes from 172.16.103.11: icmp_seq=4 ttl=63 time=0.695 ms

--- 172.16.103.11 ping statistics ---
4 packets transmitted, 3 received, +1 errors, 25% packet loss, time 3002ms
rtt min/avg/max/mdev = 0.694/0.951/1.466/0.365 ms
[root@localhost ~]# ping -s 5000 172.16.103.22
PING 172.16.103.22 (172.16.103.22) 5000(5028) bytes of data.
From 172.16.102.1 icmp_seq=1 Frag needed and DF set (mtu = 1482)
5008 bytes from 172.16.103.22: icmp_seq=2 ttl=63 time=1.34 ms
5008 bytes from 172.16.103.22: icmp_seq=3 ttl=63 time=0.696 ms
5008 bytes from 172.16.103.22: icmp_seq=4 ttl=63 time=0.518 ms

--- 172.16.103.22 ping statistics ---
4 packets transmitted, 3 received, +1 errors, 25% packet loss, time 3004ms
rtt min/avg/max/mdev = 0.518/0.852/1.344/0.356 ms
[root@localhost ~]# 

hv0:

[root@dell-per730-19 ~]# ovs-vsctl show
d2b90a51-32dc-48f4-a673-cf642452a686
    Bridge br-labNet
        Port patch-ln_port-to-br-int
            Interface patch-ln_port-to-br-int
                type: patch
                options: {peer=patch-br-int-to-ln_port}
        Port br-labNet
            Interface br-labNet
                type: internal
        Port "enp131s0f1"
            Interface "enp131s0f1"
    Bridge br-int
        fail_mode: secure
        Port "hv0_vm01_vnet1"
            Interface "hv0_vm01_vnet1"
        Port "ovn-hv1-0"
            Interface "ovn-hv1-0"
                type: geneve
                options: {csum="true", key=flow, remote_ip="20.0.0.25"}
        Port patch-br-int-to-ln_port
            Interface patch-br-int-to-ln_port
                type: patch
                options: {peer=patch-ln_port-to-br-int}
        Port br-int
            Interface br-int
                type: internal
        Port "hv0_vm00_vnet1"
            Interface "hv0_vm00_vnet1"
    ovs_version: "2.11.0"

[root@dell-per730-19 ~]# tcpdump -ei enp131s0f0 -nn
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on enp131s0f0, link-type EN10MB (Ethernet), capture size 262144 bytes
06:08:54.067271 90:e2:ba:29:c0:ac > f8:f2:1e:02:c4:80, ethertype IPv4 (0x0800), length 1548: 20.0.0.25.17654 > 20.0.0.26.6081: Geneve, Flags [C], vni 0x1, proto TEB (0x6558), options [8 bytes]: 00:de:ad:ff:01:03 > f8:f2:1e:02:c4:82, ethertype IPv4 (0x0800), length 1490: 172.16.102.11 > 172.16.103.22: ICMP echo request, id 10521, seq 3, length 1456
06:08:54.067295 90:e2:ba:29:c0:ac > f8:f2:1e:02:c4:80, ethertype IPv4 (0x0800), length 1548: 20.0.0.25.17654 > 20.0.0.26.6081: Geneve, Flags [C], vni 0x1, proto TEB (0x6558), options [8 bytes]: 00:de:ad:ff:01:03 > f8:f2:1e:02:c4:82, ethertype IPv4 (0x0800), length 1490: 172.16.102.11 > 172.16.103.22: ip-proto-1
06:08:54.067301 90:e2:ba:29:c0:ac > f8:f2:1e:02:c4:80, ethertype IPv4 (0x0800), length 1548: 20.0.0.25.17654 > 20.0.0.26.6081: Geneve, Flags [C], vni 0x1, proto TEB (0x6558), options [8 bytes]: 00:de:ad:ff:01:03 > f8:f2:1e:02:c4:82, ethertype IPv4 (0x0800), length 1490: 172.16.102.11 > 172.16.103.22: ip-proto-1
06:08:54.067307 90:e2:ba:29:c0:ac > f8:f2:1e:02:c4:80, ethertype IPv4 (0x0800), length 732: 20.0.0.25.17654 > 20.0.0.26.6081: Geneve, Flags [C], vni 0x1, proto TEB (0x6558), options [8 bytes]: 00:de:ad:ff:01:03 > f8:f2:1e:02:c4:82, ethertype IPv4 (0x0800), length 674: 172.16.102.11 > 172.16.103.22: ip-proto-1
06:08:54.067383 f8:f2:1e:02:c4:80 > 90:e2:ba:29:c0:ac, ethertype IPv4 (0x0800), length 1572: 20.0.0.26.59714 > 20.0.0.25.6081: Geneve, Flags [C], vni 0x2, proto TEB (0x6558), options [8 bytes]: 00:de:ad:ff:01:02 > 00:de:ad:01:00:01, ethertype IPv4 (0x0800), length 1514: 172.16.103.22 > 172.16.102.11: ICMP echo reply, id 10521, seq 3, length 1480
06:08:54.067397 f8:f2:1e:02:c4:80 > 90:e2:ba:29:c0:ac, ethertype IPv4 (0x0800), length 1572: 20.0.0.26.59714 > 20.0.0.25.6081: Geneve, Flags [C], vni 0x2, proto TEB (0x6558), options [8 bytes]: 00:de:ad:ff:01:02 > 00:de:ad:01:00:01, ethertype IPv4 (0x0800), length 1514: 172.16.103.22 > 172.16.102.11: ip-proto-1
06:08:54.067405 f8:f2:1e:02:c4:80 > 90:e2:ba:29:c0:ac, ethertype IPv4 (0x0800), length 1572: 20.0.0.26.59714 > 20.0.0.25.6081: Geneve, Flags [C], vni 0x2, proto TEB (0x6558), options [8 bytes]: 00:de:ad:ff:01:02 > 00:de:ad:01:00:01, ethertype IPv4 (0x0800), length 1514: 172.16.103.22 > 172.16.102.11: ip-proto-1
Comment 11 errata-xmlrpc 2019-06-05 14:58:10 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2019:1385