From: Govindarajulu Varadarajan <gvaradar@cisco.com>
Date: Thu, 1 Mar 2018 11:07:21 -0800
Subject: enic: Check if hw supports multi wq with vxlan offload
Patch-mainline: v4.17-rc1
Git-commit: 7e24c64253ed134a3c699cceda6963ac1fa6f4c8
References: bsc#1113431

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: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/cisco/enic/enic_main.c   |    5 +++++
 drivers/net/ethernet/cisco/enic/vnic_devcmd.h |    1 +
 2 files changed, 6 insertions(+)

--- a/drivers/net/ethernet/cisco/enic/enic_main.c
+++ b/drivers/net/ethernet/cisco/enic/enic_main.c
@@ -212,6 +212,11 @@ static void enic_udp_tunnel_add(struct n
 
 		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,
--- a/drivers/net/ethernet/cisco/enic/vnic_devcmd.h
+++ b/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