[Bug 263229] virtio vtnet driver with rxcsum errors
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Date: Tue, 30 Sep 2025 17:14:53 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263229
--- Comment #35 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:
URL:
https://cgit.FreeBSD.org/src/commit/?id=6e4b811009d63f33c59d51f28fd4a030ca90843e
commit 6e4b811009d63f33c59d51f28fd4a030ca90843e
Author: Michael Tuexen <tuexen@FreeBSD.org>
AuthorDate: 2025-09-29 23:58:37 +0000
Commit: Michael Tuexen <tuexen@FreeBSD.org>
CommitDate: 2025-09-30 00:03:49 +0000
vtnet: disable hardware TCP LRO by default
Hardware TCP LRO results in problems in settings with IP forwarding
being enabled. In case of nodes without IP forwarding, using
software LRO is also beneficial in general, since it can provide better
information about what was received on the wire.
Therefore, disable hardware TCP LRO by default.
By tuning the loader tunable, this can be changed.
PR: 263229
Reviewed by: Timo Völker
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D52684
share/man/man4/vtnet.4 | 22 +++++++++++++++++-----
sys/dev/virtio/network/if_vtnet.c | 2 +-
2 files changed, 18 insertions(+), 6 deletions(-)
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