qed: Fix setting of incorrect eswitch mode.

By default, driver sets the eswitch mode incorrectly as VEB (virtual
Ethernet bridging).
Need to set VEB eswitch mode only when sriov is enabled, and it should be
to set NONE by default. The patch incorporates this change.

Fixes: 0fefbfba ("qed*: Management firmware - notifications and defaults")
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/qed_dev.c

@@ -1804,7 +1804,7 @@ int qed_hw_init(struct qed_dev *cdev, struct qed_hw_init_params *p_params)
 			DP_INFO(p_hwfn, "Failed to update driver state\n");
 
 		rc = qed_mcp_ov_update_eswitch(p_hwfn, p_hwfn->p_main_ptt,
-					       QED_OV_ESWITCH_VEB);
+					       QED_OV_ESWITCH_NONE);
 		if (rc)
 			DP_INFO(p_hwfn, "Failed to update eswitch mode\n");
 	}

drivers/net/ethernet/qlogic/qed/qed_sriov.c

@@ -4513,6 +4513,8 @@ static void qed_sriov_enable_qid_config(struct qed_hwfn *hwfn,
 static int qed_sriov_enable(struct qed_dev *cdev, int num)
 {
 	struct qed_iov_vf_init_params params;
+	struct qed_hwfn *hwfn;
+	struct qed_ptt *ptt;
 	int i, j, rc;
 
 	if (num >= RESC_NUM(&cdev->hwfns[0], QED_VPORT)) {
@@ -4525,8 +4527,8 @@ static int qed_sriov_enable(struct qed_dev *cdev, int num)
 
 	/* Initialize HW for VF access */
 	for_each_hwfn(cdev, j) {
-		struct qed_hwfn *hwfn = &cdev->hwfns[j];
-		struct qed_ptt *ptt = qed_ptt_acquire(hwfn);
+		hwfn = &cdev->hwfns[j];
+		ptt = qed_ptt_acquire(hwfn);
 
 		/* Make sure not to use more than 16 queues per VF */
 		params.num_queues = min_t(int,
@@ -4562,6 +4564,19 @@ static int qed_sriov_enable(struct qed_dev *cdev, int num)
 		goto err;
 	}
 
+	hwfn = QED_LEADING_HWFN(cdev);
+	ptt = qed_ptt_acquire(hwfn);
+	if (!ptt) {
+		DP_ERR(hwfn, "Failed to acquire ptt\n");
+		rc = -EBUSY;
+		goto err;
+	}
+
+	rc = qed_mcp_ov_update_eswitch(hwfn, ptt, QED_OV_ESWITCH_VEB);
+	if (rc)
+		DP_INFO(cdev, "Failed to update eswitch mode\n");
+	qed_ptt_release(hwfn, ptt);
+
 	return num;
 
 err: