[Devel] [PATCH hci-8.1 1/2] selftests: net: veth: check UDP GRO forwarding on forwarded traffic

[no-reply at sashiko.virtuozzo.com]

> The rx-udp-gro-forwarding checks fail with "got 10 packets, expected 1"
> on a host where something has a UDP tunnel socket, a vxlan say, and
> pass on a host where nothing does. Since commit 36707061d6ba ("udp:
> allow forwarding of plain (non-fraglisted) UDP GRO packets") the
> feature aggregates only datagrams GRO finds no socket for, and GRO
> looks the socket up only once a tunnel socket exists on the host; the
> checks send to a socket in the receiving namespace, so they pass only
> while nothing looks it up.
> This tree made them pass by changing the kernel instead, in commit
> 8ce3afeec4ca ("udp: let rx-udp-gro-forwarding aggregate under
> encapsulation"), which upstream did not take.
> 
> Let the destination forward the datagrams to a receiver in a namespace
> behind it: no local socket is found there, tunnel or not, and the
> checks count what the destination receives as before.
> 
> Suggested-by: Willem de Bruijn <willemdebruijn.kernel at gmail.com>
> Link: https://lore.kernel.org/netdev/CAF=yD-LZSec9g_0bBgrcQvq2OO1BrxMSRHH=uU7eamCmWcTO_A@mail.gmail.com/
> https://virtuozzo.atlassian.net/browse/VSTOR-151678
> Feature: fix selftests
> Signed-off-by: Eva Kurchatova <eva.kurchatova at virtuozzo.com>

Sashiko has reviewed this patch and found no issues. It looks great!

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Sashiko AI review · https://sashiko.vzint.dev/#/patchset/20261026120854.600354-1-eva.kurchatova@virtuozzo.com?part=1