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net: Add netif_is_vxlan()

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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>
This commit is contained in:
Ido Schimmel 2018-10-17 08:53:20 +00:00 committed by David S. Miller
parent 4cf178d7b9
commit 5ff4ff4fe8
2 changed files with 9 additions and 1 deletions
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3
drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c
View file

@ -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;

7
include/net/vxlan.h
View file

@ -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