[dpdk-dev] [PATCH] net/enic: reset the vxlan port during vNIC initialization

[John Daley]

From: Hyong Youb Kim <hyon...@cisco.com>

The NIC persists the vxlan port number across vNIC init/de-init
(e.g. restart testpmd). So, explicitly reset the setting to the
default value (4789) as part of the initialization.

Fixes: 8a4efd17410c ("net/enic: add handlers to add/delete vxlan port number")

Signed-off-by: Hyong Youb Kim <hyon...@cisco.com>
Reviewed-by: John Daley johnd...@cisco.com>
---
 drivers/net/enic/enic_main.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index f04dc0878..03bde76b2 100644
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -1664,6 +1664,16 @@ static int enic_dev_init(struct enic *enic)
                enic->overlay_offload = true;
                enic->vxlan_port = ENIC_DEFAULT_VXLAN_PORT;
                dev_info(enic, "Overlay offload is enabled\n");
+               /*
+                * Reset the vxlan port to the default, as the NIC firmware
+                * does not reset it automatically and keeps the old setting.
+                */
+               if (vnic_dev_overlay_offload_cfg(enic->vdev,
+                                                OVERLAY_CFG_VXLAN_PORT_UPDATE,
+                                                ENIC_DEFAULT_VXLAN_PORT)) {
+                       dev_err(enic, "failed to update vxlan port\n");
+                       return -EINVAL;
+               }
        }
 
        return 0;
-- 
2.16.2