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Maniphest T8202

Remove the option to manually select XDP as VPP driver
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Description

Vyos currently supports two driver types for NICs in VPP: DPDK and XDP.
Most NICs are supported by DPDK, which provides better performance and full feature support, while XDP is rarely needed and does not fully support all VPP features.

To simplify configuration and reduce potential misconfigurations:

  • Remove XDP from the CLI — it will no longer be possible to select or configure XDP as a VPP driver.
  • Disable manual per-NIC driver selection. DPDK will be the default and only driver for all supported NICs.

Manual driver selection can be reintroduced in the future if a clear, justified need arises.

Details

Version
-
Is it a breaking change?
Config syntax change (migratable)
Issue type
Feature/functionality removal

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StatusSubtypeAssignedTask
 OpenFEATURE REQUESTNoneT7221 VPP related features the root task
 Resolvednatali-rs1985T8202 Remove the option to manually select XDP as VPP driver

Event Timeline

natali-rs1985 created this task.Jan 23 2026, 2:06 PM
natali-rs1985 changed the task status from Open to In progress.
natali-rs1985 triaged this task as High priority.
natali-rs1985 updated the task description. (Show Details)Jan 23 2026, 2:23 PM
pasik subscribed.Jan 25 2026, 2:27 PM
natali-rs1985 added a comment.Jan 26 2026, 2:20 PM

https://github.com/vyos/vyos-1x/pull/4955

natali-rs1985 mentioned this in T8192: VPP: pppoe server doesn't work with xdp driver.Jan 26 2026, 2:33 PM
natali-rs1985 added a parent task: T7221: VPP related features the root task.Jan 26 2026, 2:37 PM
Viacheslav mentioned this in T7974: VPP: Configuring XDP with num-rx-queues=all changes combined queues to pre-set maximum for virtio-net.Jan 27 2026, 5:55 PM
Viacheslav mentioned this in T8151: VPP: Switching interface driver between DPDK and XDP multiple times leads to loss of connectivity (cannot ping neighbor).
Viacheslav mentioned this in T7888: VPP xdp_dispatcher cannot be loaded.Jan 27 2026, 5:58 PM
Viacheslav mentioned this in T7891: VPP fails to load XDP on GCP with virtio_net driver.
Viacheslav mentioned this in T7883: VPP set mtu not supported for XDP.Jan 27 2026, 6:01 PM
natali-rs1985 mentioned this in rVYOSONEX04962c868300: vpp: T8202: Remove XDP driver and options from CLI and config.Jan 30 2026, 1:21 PM
Restricted Repository Identity mentioned this in rVYOSONEXff57a67e8532: Merge pull request #4955 from natali-rs1985/T8202.Jan 30 2026, 1:21 PM
rh7819 subscribed.Feb 9 2026, 6:38 AM

AF_XDP serves as the bridge between VPP and "soft interfaces". When packets originating from non-Ethernet interfaces (such as Wi-Fi, LTE, PPPoE, or OpenVPN) need to be processed inside VPP, it is the only available mechanism. it's required.

zsdc subscribed.Feb 9 2026, 1:59 PM
In T8202#249474, @rh7819 wrote:

AF_XDP serves as the bridge between VPP and "soft interfaces". When packets originating from non-Ethernet interfaces (such as Wi-Fi, LTE, PPPoE, or OpenVPN) need to be processed inside VPP, it is the only available mechanism. it's required.

While this is mostly accurate, we currently do not support non-Ethernet interfaces connected to VPP, so this is not relevant at this time.

natali-rs1985 closed this task as Resolved.Feb 10 2026, 10:20 AM
natali-rs1985 moved this task from Need Triage to Completed on the VyOS Rolling board.
dmbaturin added a project: VyOS 1.5 Circinus (2026.02).Feb 12 2026, 6:43 PM