[PATCH v5 0/4] eal: uevent overrun mitigation

[David Marchand]

On Wed, 19 Aug 2026 at 21:11, Stephen Hemminger
<stephen at networkplumber.org> wrote:
>
> This set of patches is an extension of the proposed patch
> to handle netlink uevent socket overrun reported by Randy Tice.
> Mostly impacts users of Azure VF events (MLX5 and MANA).
>
> DPDK uses netlink uevent to track hotplug events reported
> by the kernel. Since this is a one-way non-blocking channel
> there is no fool proof way to prevent missing events if DPDK
> interrupt thread does not keep up.
>
> What this series does is:
>   - use netlink group to only receive events from kernel
>   - increase socket buffer to have more headroom
>   - report the problem more clearly in log
>   - document requirement for control threads
>
> Stephen Hemminger (4):
>   eal/linux: filter uevent Netlink in kernel
>   eal/linux: increase uevent socket buffer
>   eal/linux: report uevent socket overrun
>   doc: add warning about control threads
>
>  .mailmap                                      |  1 +
>  .../prog_guide/env_abstraction_layer.rst      | 14 +++++
>  lib/eal/linux/eal_dev.c                       | 56 ++++++++++++++++---
>  3 files changed, 62 insertions(+), 9 deletions(-)

Series applied, thanks.


-- 
David Marchand