net/bnxt: fix link state operations

[ upstream commit 586d9da ]

VFs does not have the privilege to change link configuration.
But the driver silently returns success to these ethdev callbacks
without actually issuing the HWRM command to bring the link up/down.

Fixes: 5c20608 ("net/bnxt: add link state operations")

Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>

drivers/net/bnxt/bnxt_ethdev.c

@@ -919,6 +919,9 @@ static int bnxt_dev_set_link_up_op(struct rte_eth_dev *eth_dev)
 	struct bnxt *bp = eth_dev->data->dev_private;
 	int rc = 0;
 
+	if (!BNXT_SINGLE_PF(bp))
+		return -ENOTSUP;
+
 	if (!bp->link_info.link_up)
 		rc = bnxt_set_hwrm_link_config(bp, true);
 	if (!rc)
@@ -932,6 +935,9 @@ static int bnxt_dev_set_link_down_op(struct rte_eth_dev *eth_dev)
 {
 	struct bnxt *bp = eth_dev->data->dev_private;
 
+	if (!BNXT_SINGLE_PF(bp))
+		return -ENOTSUP;
+
 	eth_dev->data->dev_link.link_status = 0;
 	bnxt_set_hwrm_link_config(bp, false);
 	bp->link_info.link_up = 0;