From d1b2a6c4bed99fc7e8a11e7abcff19293d1974f5 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Tue, 27 Feb 2018 14:53:37 +0100 Subject: net: GRE: Add is_gretap_dev, is_ip6gretap_dev Determining whether a device is a GRE device is easily done by inspecting struct net_device.type. However, for the tap variants, the type is just ARPHRD_ETHER. Therefore introduce two predicate functions that use netdev_ops to tell the tap devices. Signed-off-by: Petr Machata Reviewed-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- net/ipv6/ip6_gre.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'net/ipv6/ip6_gre.c') diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 3026662a6413..4f150a394387 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -1785,6 +1785,12 @@ static void ip6gre_tap_setup(struct net_device *dev) netif_keep_dst(dev); } +bool is_ip6gretap_dev(const struct net_device *dev) +{ + return dev->netdev_ops == &ip6gre_tap_netdev_ops; +} +EXPORT_SYMBOL_GPL(is_ip6gretap_dev); + static bool ip6gre_netlink_encap_parms(struct nlattr *data[], struct ip_tunnel_encap *ipencap) { -- cgit v1.2.3-59-g8ed1b