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Commit 5ff4ff4f authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

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: default avatarIdo Schimmel <idosch@mellanox.com>
Reviewed-by: default avatarPetr Machata <petrm@mellanox.com>
Acked-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4cf178d7

drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c

+2 −1
Original line number Diff line number Diff line
@@ -4,6 +4,7 @@ 
#include <linux/etherdevice.h>

#include <linux/inetdevice.h>

#include <net/netevent.h>

#include <net/vxlan.h>

#include <linux/idr.h>

#include <net/dst_metadata.h>

#include <net/arp.h>
@@ -187,7 +188,7 @@ static bool nfp_tun_is_netdev_to_offload(struct net_device *netdev) 
		return false;

	if (!strcmp(netdev->rtnl_link_ops->kind, "openvswitch"))

		return true;

	if (!strcmp(netdev->rtnl_link_ops->kind, "vxlan"))

	if (netif_is_vxlan(netdev))

		return true;



	return false;

include/net/vxlan.h

+7 −0
Original line number Diff line number Diff line
@@ -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