enic: Check if hw supports multi wq with vxlan offload

Some adaptors do not support vxlan offload when multi wq is configured.

If hw supports multi wq, BIT(2) is set in a1.
Signed-off-by: NGovindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/cisco/enic/enic_main.c

@@ -212,6 +212,11 @@ static void enic_udp_tunnel_add(struct net_device *netdev,
 
 		goto error;
 	}
+	if ((vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ) != 1) &&
+	    !(enic->vxlan.flags & ENIC_VXLAN_MULTI_WQ)) {
+		netdev_info(netdev, "vxlan: vxlan offload with multi wq not supported on this adapter");
+		goto error;
+	}
 
 	err = vnic_dev_overlay_offload_cfg(enic->vdev,
 					   OVERLAY_CFG_VXLAN_PORT_UPDATE,

drivers/net/ethernet/cisco/enic/vnic_devcmd.h

@@ -699,6 +699,7 @@ enum overlay_ofld_cmd {
 
 #define ENIC_VXLAN_INNER_IPV6		BIT(0)
 #define ENIC_VXLAN_OUTER_IPV6		BIT(1)
+#define ENIC_VXLAN_MULTI_WQ		BIT(2)
 
 /* Use this enum to get the supported versions for each of these features
  * If you need to use the devcmd_get_supported_feature_version(), add