net/hns3: fix DCB mode check

[ upstream commit edba2e3 ]

Currently, "ONLY DCB" and "DCB+RSS" mode are both supported by HNS3
PF driver. But the driver verifies only the "DCB+RSS" multiple queues
mode.

Fixes: 62e3ccc ("net/hns3: support flow control")

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>

drivers/net/hns3/hns3_ethdev.c

@@ -2154,7 +2154,7 @@ hns3_check_mq_mode(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
-	if (rx_mq_mode == ETH_MQ_RX_DCB_RSS) {
+	if (rx_mq_mode & ETH_MQ_RX_DCB_FLAG) {
 		if (dcb_rx_conf->nb_tcs > pf->tc_max) {
 			hns3_err(hw, "nb_tcs(%u) > max_tc(%u) driver supported.",
 				 dcb_rx_conf->nb_tcs, pf->tc_max);