virtio-net: fix incorrect flags recording in big mode

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[ Upstream commit 0eff2eaa53 ]

The purpose of commit 703eec1b24 ("virtio_net: fixing XDP for fully
checksummed packets handling") is to record the flags in advance, as
their value may be overwritten in the XDP case. However, the flags
recorded under big mode are incorrect, because in big mode, the passed
buf does not point to the rx buffer, but rather to the page of the
submitted buffer. This commit fixes this issue.

For the small mode, the commit c11a49d58a ("virtio_net: Fix mismatched
buf address when unmapping for small packets") fixed it.

Tested-by: Alyssa Ross <hi@alyssa.is>
Fixes: 703eec1b24 ("virtio_net: fixing XDP for fully checksummed packets handling")
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://patch.msgid.link/20251111090828.23186-1-xuanzhuo@linux.alibaba.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Xuan Zhuo 2025-11-11 17:08:28 +08:00 • committed by Greg Kroah-Hartman

parent 4d8b5fe1a4

commit 6e48bc7c26

1 changed files with 11 additions and 5 deletions

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drivers/net/virtio_net.c

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