T7797: VPP: switching from XDP to DPDK driver fails in cloud vm (hv_netvsc)

[natali-rs1985]

Change summary

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe):

Related Task(s)

• https://vyos.dev/T7797

Related PR(s)

How to test / Smoketest result

adminuser@vyos-vm# ethtool -i eth1
driver: hv_netvsc
version: 6.6.111-vyos
firmware-version: N/A
expansion-rom-version:
bus-info: 7ced8d0e-78de-7ced-8d0e-78de7ce
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: yes
supports-priv-flags: no
[edit]


set vpp settings interface eth1 driver xdp
commit
set vpp settings interface eth1 driver dpdk


adminuser@vyos-vm# commit
[ vpp ]

WARNING: NOTE: Current dataplane capacity (estimated): 2.1 M IPv4
routes. Exceeding these values will lead to a dataplane out-of-memory
condition and a crash. Extensive use of features like ACLs, NAT and
others may reduce the numbers above. Please read the documentation for
details: https://docs.vyos.io/


[edit]
adminuser@vyos-vm#

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• I have run the components SMOKETESTS if applicable
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly

[github-actions]

👍
No issues in PR Title / Commit Title

[github-actions]

CI integration 👍 passed!

Details

CI logs

• CLI Smoketests (no interfaces) 👍 passed
• CLI Smoketests VPP 👍 passed
• CLI Smoketests (interfaces only) 👍 passed
• Config tests 👍 passed
• Config tests VPP 👍 passed
• RAID1 tests 👍 passed
• TPM tests 👍 passed

[zdc]

This can be a temporary solution. In the long term, we need to reorganize the whole logic behind interface initialization.

[dmbaturin]

If the temporary solution works and fixed the bug, I'm not against it. We need to get it fixed one way or another.