From 5ff4ff4fe8c4e7d0de1d837e489056f0c470667b Mon Sep 17 00:00:00 2001
From: Ido Schimmel <idosch@mellanox.com>
Date: Wed, 17 Oct 2018 08:53:20 +0000
Subject: net: Add netif_is_vxlan()

Add the ability to determine whether a netdev is a VxLAN netdev by
calling the above mentioned function that checks the netdev's
rtnl_link_ops.

This will allow modules to identify netdev events involving a VxLAN
netdev and act accordingly. For example, drivers capable of VxLAN
offload will need to configure the underlying device when a VxLAN netdev
is being enslaved to an offloaded bridge.

Convert nfp to use the newly introduced helper.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/net/vxlan.h | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'include/net/vxlan.h')

diff --git a/include/net/vxlan.h b/include/net/vxlan.h
index dd3d72ce64b6..95227fa925e8 100644
--- a/include/net/vxlan.h
+++ b/include/net/vxlan.h
@@ -5,6 +5,7 @@
 #include <linux/if_vlan.h>
 #include <net/udp_tunnel.h>
 #include <net/dst_metadata.h>
+#include <net/rtnetlink.h>
 
 /* VXLAN protocol (RFC 7348) header:
  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
@@ -402,4 +403,10 @@ static inline bool vxlan_addr_multicast(const union vxlan_addr *ipa)
 
 #endif /* IS_ENABLED(CONFIG_IPV6) */
 
+static inline bool netif_is_vxlan(const struct net_device *dev)
+{
+	return dev->rtnl_link_ops &&
+	       !strcmp(dev->rtnl_link_ops->kind, "vxlan");
+}
+
 #endif
-- 
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