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openvswitch: get related ct labels from its master if it is not confirmed 

[ Upstream commit a23ac973f67f37e77b3c634e8b1ad5b0164fcc1f ]

Ilya found a failure in running check-kernel tests with at_groups=144
(144: conntrack - FTP SNAT orig tuple) in OVS repo. After his further
investigation, the root cause is that the labels sent to userspace
for related ct are incorrect.

The labels for unconfirmed related ct should use its master's labels.
However, the changes made in commit 8c8b733208 ("openvswitch: set
IPS_CONFIRMED in tmpl status only when commit is set in conntrack")
led to getting labels from this related ct.

So fix it in ovs_ct_get_labels() by changing to copy labels from its
master ct if it is a unconfirmed related ct. Note that there is no
fix needed for ct->mark, as it was already copied from its master
ct for related ct in init_conntrack().

Fixes: 8c8b733208 ("openvswitch: set IPS_CONFIRMED in tmpl status only when commit is set in conntrack")
Reported-by: Ilya Maximets <i.maximets@ovn.org>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: Ilya Maximets <i.maximets@ovn.org>
Tested-by: Ilya Maximets <i.maximets@ovn.org>
Reviewed-by: Aaron Conole <aconole@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Xin Long 2024-06-19 18:08:56 -04:00 committed by Greg Kroah-Hartman
parent 2ef957de4e
commit ba4d75a8f4
1 changed files with 6 additions and 1 deletions
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7
net/openvswitch/conntrack.c
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@ -168,8 +168,13 @@ static u32 ovs_ct_get_mark(const struct nf_conn *ct)
static void ovs_ct_get_labels(const struct nf_conn *ct,
struct ovs_key_ct_labels *labels)
{
struct nf_conn_labels *cl = ct ? nf_ct_labels_find(ct) : NULL;
struct nf_conn_labels *cl = NULL;
if (ct) {
if (ct->master && !nf_ct_is_confirmed(ct))
ct = ct->master;
cl = nf_ct_labels_find(ct);
}
if (cl)
memcpy(labels, cl->bits, OVS_CT_LABELS_LEN);
else