[PATCH iwl-net 4/5] iavf: fix TC boundary check in iavf_handle_tclass

[Aleksandr Loktionov <aleksandr.loktionov@intel.com>]

From: Avinash Dayanand <avinash.dayanand@intel.com>

The condition `tc < adapter->num_tc` admits any tc value equal to or
greater than num_tc, bypassing the destination-port validation and
allowing traffic to be steered to a non-existent traffic class. Change
the comparison to `tc > adapter->num_tc` to correctly reject
out-of-range TC values.

Fixes: 0075fa0fadd0 ("i40evf: Add support to apply cloud filters")
Signed-off-by: Avinash Dayanand <avinash.dayanand@intel.com>
Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
---
 drivers/net/ethernet/intel/iavf/iavf_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
index ab5f5adc..5e4035b 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_main.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
@@ -4062,7 +4062,7 @@ static int iavf_handle_tclass(struct iavf_adapter *adapter, u32 tc,
 {
 	if (tc == 0)
 		return 0;
-	if (tc < adapter->num_tc) {
+	if (tc > adapter->num_tc) {
 		if (!filter->f.data.tcp_spec.dst_port) {
 			dev_err(&adapter->pdev->dev,
 				"Specify destination port to redirect to traffic class other than TC0\n");
-- 
2.52.0