Hi
I use intel 1G and 10G ethernet card with openvswitch under vxlan overlay network.
Some VM started to use ECN and I found weird logs were generated about non-ECT.
I checked vxlan packets, but all packets had no errors. Also, vxlan outer header's ECN was normal acording to RFC6040.
I changed ethernet card to Broadcom, and I found there was no non-ECT log.
I need to stop wrong non-ECT logs. How should I do?
Please see below informations:
[root@compute01 ~]# grep vxlan /var/log/messages | tail
Dec 13 10:32:57 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
Dec 13 10:32:57 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
Dec 13 10:32:57 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
Dec 13 10:32:57 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
Dec 13 10:32:57 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
Dec 13 10:32:57 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
Dec 13 10:32:57 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
Dec 13 10:32:57 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
Dec 13 10:33:32 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
Dec 13 10:33:34 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
[root@compute01 ~]# uname -a
Linux compute01 3.10.0-693.5.2.el7.x86_64 #1 SMP Fri Oct 20 20:32:50 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
[root@compute01 ~]# ethtool -i eth4
driver: ixgbe
version: 4.4.0-k-rh7.4
firmware-version: 0x80000609
expansion-rom-version:
bus-info: 0000:04:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: no
[root@compute01 ~]# ethtool -k eth4
Features for eth4:
rx-checksumming: on
tx-checksumming: on
tx-checksum-ipv4: off [fixed]
tx-checksum-ip-generic: on
tx-checksum-ipv6: off [fixed]
tx-checksum-fcoe-crc: on [fixed]
tx-checksum-sctp: on
scatter-gather: on
tx-scatter-gather: on
tx-scatter-gather-fraglist: off [fixed]
tcp-segmentation-offload: on
tx-tcp-segmentation: on
tx-tcp-ecn-segmentation: off [fixed]
tx-tcp6-segmentation: on
tx-tcp-mangleid-segmentation: off
udp-fragmentation-offload: off [fixed]
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off
rx-vlan-offload: on
tx-vlan-offload: on
ntuple-filters: off
receive-hashing: on
highdma: on [fixed]
rx-vlan-filter: on
vlan-challenged: off [fixed]
tx-lockless: off [fixed]
netns-local: off [fixed]
tx-gso-robust: off [fixed]
tx-fcoe-segmentation: on [fixed]
tx-gre-segmentation: on
tx-ipip-segmentation: on
tx-sit-segmentation: on
tx-udp_tnl-segmentation: on
tx-mpls-segmentation: off [fixed]
fcoe-mtu: off [fixed]
tx-nocache-copy: off
loopback: off [fixed]
rx-fcs: off [fixed]
rx-all: off
tx-vlan-stag-hw-insert: off [fixed]
rx-vlan-stag-hw-parse: off [fixed]
rx-vlan-stag-filter: off [fixed]
busy-poll: on [fixed]
tx-gre-csum-segmentation: on
tx-udp_tnl-csum-segmentation: on
tx-gso-partial: on
tx-sctp-segmentation: off [fixed]
l2-fwd-offload: off
hw-tc-offload: off [fixed]
///////////////////////////////////////////////////////////////////
| root@oscompute01:~# grep vxlan /var/log/syslog | tail |
Dec 13 18:53:50 oscompute01 kernel: [188924.432135] vxlan: non-ECT from 192.168.2.32 with TOS=0x2
Dec 13 18:53:51 oscompute01 kernel: [188925.431957] vxlan: non-ECT from 192.168.2.32 with TOS=0x2
Dec 13 18:53:51 oscompute01 kernel: [188925.432004] vxlan: non-ECT from 192.168.2.32 with TOS=0x2
Dec 13 18:53:51 oscompute01 kernel: [188925.447808] vxlan: non-ECT from 192.168.2.32 with TOS=0x2
Dec 13 18:53:52 oscompute01 kernel: [188926.447743] vxlan: non-ECT from 192.168.2.32 with TOS=0x2
Dec 13 18:53:52 oscompute01 kernel: [188926.463339] vxlan: non-ECT from 192.168.2.32 with TOS=0x2
Dec 13 18:53:54 oscompute01 kernel: [188928.463280] vxlan: non-ECT from 192.168.2.32 with TOS=0x2
Dec 13 18:53:54 oscompute01 kernel: [188928.478883] vxlan: non-ECT from 192.168.2.32 with TOS=0x2
Dec 13 18:53:55 oscompute01 kernel: [188929.463051] vxlan: non-ECT from 192.168.2.32 with TOS=0x2
Dec 13 18:53:55 oscompute01 kernel: [188929.478835] vxlan: non-ECT from 192.168.2.32 with TOS=0x2
root@oscompute01:~# uname -a
Linux oscompute01 4.4.0-103-generic #126-Ubuntu SMP Mon Dec 4 16:23:28 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
root@oscompute01:~# ethtool -i eth1
driver: igb
version: 5.3.5.12
firmware-version: 1.70, 0x80000f44, 1.1752.0
expansion-rom-version:
bus-info: 0000:04:00.1
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: no
root@oscompute01:~# ethtool -k eth1
Features for eth1:
rx-checksumming: on
tx-checksumming: on
| tx-checksum-ipv4: on | |
| tx-checksum-ip-generic: off [fixed] | |
| tx-checksum-ipv6: on | |
| tx-checksum-fcoe-crc: off [fixed] | |
| tx-checksum-sctp: off [fixed] |
scatter-gather: on
| tx-scatter-gather: on | |
| tx-scatter-gather-fraglist: off [fixed] |
tcp-segmentation-offload: on
| tx-tcp-segmentation: on | |
| tx-tcp-ecn-segmentation: off [fixed] | |
| tx-tcp6-segmentation: on |
udp-fragmentation-offload: off [fixed]
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off [requested on]
rx-vlan-offload: on
tx-vlan-offload: on
ntuple-filters: off [fixed]
receive-hashing: on
highdma: on [fixed]
rx-vlan-filter: on [fixed]
vlan-challenged: off [fixed]
tx-lockless: off [fixed]
netns-local: off [fixed]
tx-gso-robust: off [fixed]
tx-fcoe-segmentation: off [fixed]
tx-gre-segmentation: off [fixed]
tx-ipip-segmentation: off [fixed]
tx-sit-segmentation: off [fixed]
tx-udp_tnl-segmentation: off [fixed]
fcoe-mtu: off [fixed]
tx-nocache-copy: off
loopback: off [fixed]
rx-fcs: off [fixed]
rx-all: off [fixed]
tx-vlan-stag-hw-insert: off [fixed]
rx-vlan-stag-hw-parse: off [fixed]
rx-vlan-stag-filter: off [fixed]
l2-fwd-offload: off [fixed]
busy-poll: off [fixed]
hw-tc-offload: off [fixed]
///////////////////////////////////////////////////////////////////
[root@compute01 ~]# tail -f /var/log/messages | grep -i vxlan
Dec 14 11:24:28 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
Dec 14 11:24:28 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
Dec 14 11:24:28 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
Dec 14 11:24:28 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
Dec 14 11:24:30 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
Dec 14 11:24:30 compute01 kernel: vxlan: non-ECT from 192.168.40.55 with TOS=0x2
^C
[root@compute01 ~]# uname -a
Linux compute01 3.10.0-693.11.1.el7.x86_64 #1 SMP Mon Dec 4 23:52:40 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
[root@compute01 ~]# ethtool -i eth4
driver: ixgbe
version: 5.3.3
firmware-version: 0x800005b6, 1.1752.0
expansion-rom-version:
bus-info: 0000:04:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes
[root@compute01 ~]# ethtool -k eth4
Features for eth4:
rx-checksumming: on
tx-checksumming: on
tx-checksum-ipv4: off [fixed]
tx-checksum-ip-generic: on
tx-checksum-ipv6: off [fixed]
tx-checksum-fcoe-crc: on [fixed]
tx-checksum-sctp: on
scatter-gather: on
tx-scatter-gather: on
tx-scatter-gather-fraglist: off [fixed]
tcp-segmentation-offload: on
tx-tcp-segmentation: on
tx-tcp-ecn-segmentation: off [fixed]
tx-tcp6-segmentation: on
tx-tcp-mangleid-segmentation: off
udp-fragmentation-offload: off [fixed]
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off
rx-vlan-offload: on
tx-vlan-offload: on
ntuple-filters: off
receive-hashing: on
highdma: on [fixed]
rx-vlan-filter: on
vlan-challenged: off [fixed]
tx-lockless: off [fixed]
netns-local: off [fixed]
tx-gso-robust: off [fixed]
tx-fcoe-segmentation: on [fixed]
tx-gre-segmentation: on
tx-ipip-segmentation: off [fixed]
tx-sit-segmentation: off [fixed]
tx-udp_tnl-segmentation: on
tx-mpls-segmentation: off [fixed]
fcoe-mtu: off [fixed]
tx-nocache-copy: off
loopback: off [fixed]
rx-fcs: off [fixed]
rx-all: off
tx-vlan-stag-hw-insert: off [fixed]
rx-vlan-stag-hw-parse: off [fixed]
rx-vlan-stag-filter: off [fixed]
busy-poll: on [fixed]
tx-gre-csum-segmentation: on
tx-udp_tnl-csum-segmentation: on
tx-gso-partial: on
tx-sctp-segmentation: off [fixed]
l2-fwd-offload: off [fixed]
hw-tc-offload: off