[LTP] [PATCH] tcindex01: Pass if the tcindex module is blacklisted

[Martin Doucha]

The tcindex01 test currently fails if the tcindex module is enabled
in kernel config but cannot be autoloaded. Some distros chose
to blacklist the module rather than remove it completely, thus
check for autoload failure and pass in that case.

Signed-off-by: Martin Doucha <mdoucha@suse.cz>
---
 testcases/cve/tcindex01.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/testcases/cve/tcindex01.c b/testcases/cve/tcindex01.c
index 70e5639f1..07239f9c0 100644
--- a/testcases/cve/tcindex01.c
+++ b/testcases/cve/tcindex01.c
@@ -106,8 +106,19 @@ static void run(void)
 	NETDEV_ADD_QDISC(DEVNAME, AF_UNSPEC, TC_H_ROOT, qd_handle, "htb",
 		qd_config);
 	NETDEV_ADD_TRAFFIC_CLASS(DEVNAME, qd_handle, clsid, "htb", cls_config);
-	NETDEV_ADD_TRAFFIC_FILTER(DEVNAME, qd_handle, 10, ETH_P_IP, 1,
-		"tcindex", f_config);
+	ret = tst_netdev_add_traffic_filter(__FILE__, __LINE__, 0, DEVNAME,
+		qd_handle, 10, ETH_P_IP, 1, "tcindex", f_config);
+	TST_ERR = tst_netlink_errno;
+
+	if (!ret && TST_ERR == ENOENT) {
+		tst_res(TPASS | TTERRNO,
+			"tcindex module is blacklisted or unavailable");
+		return;
+	}
+
+	if (!ret)
+		tst_brk(TBROK | TTERRNO, "Cannot add tcindex filter");
+
 	NETDEV_REMOVE_TRAFFIC_FILTER(DEVNAME, qd_handle, 10, ETH_P_IP,
 		1, "tcindex");
 	ret = tst_netdev_add_traffic_filter(__FILE__, __LINE__, 0, DEVNAME,
-- 
2.44.0