[dpdk-dev] [PATCH v2 10/13] net/enic: reset VXLAN port regardless of overlay offload

[Hyong Youb Kim]

Currently, the driver resets the vxlan port register only if overlay
offload is enabled. But, the register is actually tied to hardware
vxlan parsing, which is an independent feature and is always enabled
even if overlay offload is disabled. If left uninitialized, it can
affect flow rules that match vxlan. So always reset the port number
when HW vxlan parsing is available.

Fixes: 8a4efd17410c ("net/enic: add handlers to add/delete vxlan port number")
Cc: stable at dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim at cisco.com>
---
 drivers/net/enic/enic_main.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index 2652949a2..ea9eb2edf 100644
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -1714,8 +1714,15 @@ static int enic_dev_init(struct enic *enic)
 			PKT_TX_OUTER_IP_CKSUM |
 			PKT_TX_TUNNEL_MASK;
 		enic->overlay_offload = true;
-		enic->vxlan_port = ENIC_DEFAULT_VXLAN_PORT;
 		dev_info(enic, "Overlay offload is enabled\n");
+	}
+	/*
+	 * Reset the vxlan port if HW vxlan parsing is available. It
+	 * is always enabled regardless of overlay offload
+	 * enable/disable.
+	 */
+	if (enic->vxlan) {
+		enic->vxlan_port = ENIC_DEFAULT_VXLAN_PORT;
 		/*
 		 * Reset the vxlan port to the default, as the NIC firmware
 		 * does not reset it automatically and keeps the old setting.
-- 
2.16.2