diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index 447093361b7a..3ad10a497fbb 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -1078,6 +1078,13 @@ enum npc_af_status {
 	NPC_MCAM_ALLOC_DENIED	= -702,
 	NPC_MCAM_ALLOC_FAILED	= -703,
 	NPC_MCAM_PERM_DENIED	= -704,
+	NPC_FLOW_INTF_INVALID	= -707,
+	NPC_FLOW_CHAN_INVALID	= -708,
+	NPC_FLOW_NO_NIXLF	= -709,
+	NPC_FLOW_NOT_SUPPORTED	= -710,
+	NPC_FLOW_VF_PERM_DENIED	= -711,
+	NPC_FLOW_VF_NOT_INIT	= -712,
+	NPC_FLOW_VF_OVERLAP	= -713,
 };
 
 struct npc_mcam_alloc_entry_req {
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
index 5c01cf4a9c5b..fd07562a33b7 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
@@ -600,7 +600,7 @@ static int npc_check_unsupported_flows(struct rvu *rvu, u64 features, u8 intf)
 		dev_info(rvu->dev, "Unsupported flow(s):\n");
 		for_each_set_bit(bit, (unsigned long *)&unsupported, 64)
 			dev_info(rvu->dev, "%s ", npc_get_field_name(bit));
-		return NIX_AF_ERR_NPC_KEY_NOT_SUPP;
+		return -EOPNOTSUPP;
 	}
 
 	return 0;
@@ -1143,10 +1143,10 @@ int rvu_mbox_handler_npc_install_flow(struct rvu *rvu,
 	}
 
 	if (!is_npc_interface_valid(rvu, req->intf))
-		return -EINVAL;
+		return NPC_FLOW_INTF_INVALID;
 
 	if (from_vf && req->default_rule)
-		return NPC_MCAM_PERM_DENIED;
+		return NPC_FLOW_VF_PERM_DENIED;
 
 	/* Each PF/VF info is maintained in struct rvu_pfvf.
 	 * rvu_pfvf for the target PF/VF needs to be retrieved
@@ -1172,12 +1172,12 @@ int rvu_mbox_handler_npc_install_flow(struct rvu *rvu,
 
 	err = npc_check_unsupported_flows(rvu, req->features, req->intf);
 	if (err)
-		return err;
+		return NPC_FLOW_NOT_SUPPORTED;
 
 	/* Skip channel validation if AF is installing */
 	if (!is_pffunc_af(req->hdr.pcifunc) &&
 	    npc_mcam_verify_channel(rvu, target, req->intf, req->channel))
-		return -EINVAL;
+		return NPC_FLOW_CHAN_INVALID;
 
 	pfvf = rvu_get_pfvf(rvu, target);
 
@@ -1195,7 +1195,7 @@ int rvu_mbox_handler_npc_install_flow(struct rvu *rvu,
 	/* Proceed if NIXLF is attached or not for TX rules */
 	err = nix_get_nixlf(rvu, target, &nixlf, NULL);
 	if (err && is_npc_intf_rx(req->intf) && !pf_set_vfs_mac)
-		return -EINVAL;
+		return NPC_FLOW_NO_NIXLF;
 
 	/* don't enable rule when nixlf not attached or initialized */
 	if (!(is_nixlf_attached(rvu, target) &&
@@ -1211,7 +1211,7 @@ int rvu_mbox_handler_npc_install_flow(struct rvu *rvu,
 
 	/* Do not allow requests from uninitialized VFs */
 	if (from_vf && !enable)
-		return -EINVAL;
+		return NPC_FLOW_VF_NOT_INIT;
 
 	/* PF sets VF mac & VF NIXLF is not attached, update the mac addr */
 	if (pf_set_vfs_mac && !enable) {
@@ -1226,7 +1226,7 @@ int rvu_mbox_handler_npc_install_flow(struct rvu *rvu,
 	 */
 	if (from_vf && pfvf->def_ucast_rule && is_npc_intf_rx(req->intf) &&
 	    pfvf->def_ucast_rule->features & req->features)
-		return -EINVAL;
+		return NPC_FLOW_VF_OVERLAP;
 
 	return npc_install_flow(rvu, blkaddr, target, nixlf, pfvf, req, rsp,
 				enable, pf_set_vfs_mac);