From 23c578bf7d532552298c84d4872e4ab85ed82840 Mon Sep 17 00:00:00 2001
From: stephen hemminger <stephen@networkplumber.org>
Date: Sat, 27 Apr 2013 11:31:53 +0000
Subject: [PATCH] vxlan: document UDP default port
The default port for VXLAN is not same as IANA value.
Document this.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/vxlan.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 9a6962643e55..e6a3d4737df2 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -8,7 +8,6 @@
* published by the Free Software Foundation.
*
* TODO
- * - use IANA UDP port number (when defined)
* - IPv6 (not in RFC)
*/
@@ -65,7 +64,10 @@ struct vxlanhdr {
__be32 vx_vni;
};
-/* UDP port for VXLAN traffic. */
+/* UDP port for VXLAN traffic.
+ * The IANA assigned port is 4789, but the Linux default is 8472
+ * for compatability with early adopters.
+ */
static unsigned int vxlan_port __read_mostly = 8472;
module_param_named(udp_port, vxlan_port, uint, 0444);
MODULE_PARM_DESC(udp_port, "Destination UDP port");
--
2.34.1