Subject: [PATCH AUTOSEL 4.19 186/237] openvswitch: fix linking without CONFIG_NF_CONNTRACK_LABELS

From: Sasha Levin <[email-masked]>
Date: Sat, 16 Nov 2019 10:40:21 -0500

From: Arnd Bergmann <[email-masked]>

[ Upstream commit a277d516de5f498c91d91189717ef7e01102ad27 ]

When CONFIG_CC_OPTIMIZE_FOR_DEBUGGING is enabled, the compiler
fails to optimize out a dead code path, which leads to a link failure:

net/openvswitch/conntrack.o: In function `ovs_ct_set_labels':
conntrack.c:(.text+0x2e60): undefined reference to `nf_connlabels_replace'

In this configuration, we can take a shortcut, and completely
remove the contrack label code. This may also help the regular
optimization.

Signed-off-by: Arnd Bergmann <[email-masked]>
Signed-off-by: David S. Miller <[email-masked]>
Signed-off-by: Sasha Levin <[email-masked]>
---
 net/openvswitch/conntrack.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c
index 35ae64cbef33f..46aa1aa51db41 100644
--- a/net/openvswitch/conntrack.c
+++ b/net/openvswitch/conntrack.c
@@ -1199,7 +1199,8 @@ static int ovs_ct_commit(struct net *net, struct sw_flow_key *key,
 					 &info->labels.mask);
 		if (err)
 			return err;
-	} else if (labels_nonzero(&info->labels.mask)) {
+	} else if (IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS) &&
+		   labels_nonzero(&info->labels.mask)) {
 		err = ovs_ct_set_labels(ct, key, &info->labels.value,
 					&info->labels.mask);
 		if (err)
-- 
2.20.1