Calico Pod to Pod communication not working on SLE 15 SP1

[Anil-YadavK8s]

Calico Pod to Pod communication not working on SLE 15 SP1 kernel version:4.12.14-197.51-default

Kernel version: 4.12.14-197.51-default

Related issue on calico: projectcalico/calico#3908

It was specific driver version of vmxnet3 which was causing the issue which is controlled by kernel version of Suse Linux Vm (4.12.14-197.51-default).

Problematic: vmnet3 version
ccdadmin@seliicbl01489-ns1-testbed3-m2:~> sudo ethtool -i eth0
driver: vmxnet3
version: 1.5.0.0-k-NAPI
firmware-version:
expansion-rom-version:
bus-info: 0000:04:00.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: yes
supports-priv-flags: no

After downgrading the kernel version nodes from 4.12.14-197.51-default to 4.12.14-195-default, Pod to Pod communication is working without any WR to disable TSO.

Current workaround on kernel (4.12.14-197.51-default) is to disable TSO.

[hramrach]

Hi,

On Thu, 27 Aug 2020, Anil-YadavK8s wrote: Calico Pod to Pod communication not working on SLE 15 SP1 kernel version:4.12.14-197.51-default Kernel version: 4.12.14-197.51-default Related issue on calico: projectcalico/calico#3908 It was specific driver version of vmxnet3 which was causing the issue which is controlled by kernel version of Suse Linux Vm (4.12.14-197.51-default). Problematic: vmnet3 version ***@***.***:~> sudo ethtool -i eth0 driver: vmxnet3 **version: 1.5.0.0-k-NAPI** firmware-version: expansion-rom-version: bus-info: 0000:04:00.0 supports-statistics: yes supports-test: no supports-eeprom-access: no supports-register-dump: yes supports-priv-flags: no After downgrading the kernel version nodes from 4.12.14-197.51-default to 4.12.14-195-default, Pod to Pod communication is working without any WR to disable TSO. Current workaround on kernel (4.12.14-197.51-default) is to disable TSO.

first let me ask one thing. You reported the issue against our live patching repository on github. Is the kernel, you're running, live patched? Output of "klp" tool would be useful in that case. If not, there might be a regression in the kernel itself. 4.12.14-197.51-default is the latest SLE15-SP1. Anyway, the correct channel to report the problem is our bugzilla.suse.com. Please, add more description, because the above is not sufficient in my opinion. Thanks Miroslav

[Anil-YadavK8s]

Thanks @hramrach for direction. Will raise the ticket to bugzilla.suse.com.