qed: Define new MF bit for no_vlan config

The patch introduces a new Multi-Function bit for cases where firmware
shouldn't perform the insertion of vlan-0 tag. The new bit is defined to
abstract the implementation from the actual MF mode.
Signed-off-by: NSudarsana Reddy Kalluru <skalluru@marvell.com>
Signed-off-by: NAriel Elior <aelior@marvell.com>
Signed-off-by: NMichal Kalderon <mkalderon@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/qed.h

@@ -492,6 +492,9 @@ enum qed_mf_mode_bit {
 
 	/* Allow DSCP to TC mapping */
 	QED_MF_DSCP_TO_TC_MAP,
+
+	/* Do not insert a vlan tag with id 0 */
+	QED_MF_DONT_ADD_VLAN0_TAG,
 };
 
 enum qed_ufp_mode {

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

@@ -204,9 +204,7 @@ qed_dcbx_set_params(struct qed_dcbx_results *p_data,
 	else
 		p_data->arr[type].update = DONT_UPDATE_DCB_DSCP;
 
-	/* Do not add vlan tag 0 when DCB is enabled and port in UFP/OV mode */
-	if ((test_bit(QED_MF_8021Q_TAGGING, &p_hwfn->cdev->mf_bits) ||
-	     test_bit(QED_MF_8021AD_TAGGING, &p_hwfn->cdev->mf_bits)))
+	if (test_bit(QED_MF_DONT_ADD_VLAN0_TAG, &p_hwfn->cdev->mf_bits))
 		p_data->arr[type].dont_add_vlan0 = true;
 
 	/* QM reconf data */

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

@@ -3157,12 +3157,14 @@ static int qed_hw_get_nvm_info(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
 			cdev->mf_bits = BIT(QED_MF_OVLAN_CLSS) |
 					BIT(QED_MF_LLH_PROTO_CLSS) |
 					BIT(QED_MF_UFP_SPECIFIC) |
-					BIT(QED_MF_8021Q_TAGGING);
+					BIT(QED_MF_8021Q_TAGGING) |
+					BIT(QED_MF_DONT_ADD_VLAN0_TAG);
 			break;
 		case NVM_CFG1_GLOB_MF_MODE_BD:
 			cdev->mf_bits = BIT(QED_MF_OVLAN_CLSS) |
 					BIT(QED_MF_LLH_PROTO_CLSS) |
-					BIT(QED_MF_8021AD_TAGGING);
+					BIT(QED_MF_8021AD_TAGGING) |
+					BIT(QED_MF_DONT_ADD_VLAN0_TAG);
 			break;
 		case NVM_CFG1_GLOB_MF_MODE_NPAR1_0:
 			cdev->mf_bits = BIT(QED_MF_LLH_MAC_CLSS) |